CN107134943A - A kind of stretchable self-contained electric system, preparation method and wearable device - Google Patents
A kind of stretchable self-contained electric system, preparation method and wearable device Download PDFInfo
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- CN107134943A CN107134943A CN201710405510.0A CN201710405510A CN107134943A CN 107134943 A CN107134943 A CN 107134943A CN 201710405510 A CN201710405510 A CN 201710405510A CN 107134943 A CN107134943 A CN 107134943A
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- stretchable
- carbon paper
- ultracapacitor
- power generator
- self
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Links
- 238000002360 preparation method Methods 0.000 title claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 106
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 106
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 35
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 239000007784 solid electrolyte Substances 0.000 claims description 20
- 230000004888 barrier function Effects 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 12
- 230000008034 disappearance Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 5
- 238000002484 cyclic voltammetry Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000037081 physical activity Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000008037 Arthrogryposis Diseases 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/52—Separators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention provides a kind of stretchable self-contained electric system based on foldable carbon paper, including：Stretchable friction nanometer power generator, it includes silicon rubber and the first carbon paper electrode, and first carbon paper electrode is arranged to be sealed in the silicon rubber；Stretchable ultracapacitor, it is arranged to be sealed in the silicon rubber, and setting is spaced apart with first carbon paper, it is configured to deform under extraneous tensile force, folding force and/or torsion, and is substantially restored to the original state when the tensile force, folding force and/or torsion disappear；And rectifier bridge, for the ac signal of the stretchable friction nanometer power generator output to be converted into DC signal, and the DC signal is exported to the stretchable solid-state super capacitor.Friction nanometer power generator and ultracapacitor are packaged into an entirety, the size of device can not only be greatly reduced, additionally it is possible to the performance for the electric energy that friction nanometer power generator is sent and can be collected with extraordinary tensility.
Description
Technical field
The present invention relates to flexible electronic device field, more particularly to a kind of stretchable self-contained electric system, preparation method and
Wearable device.
Background technology
With the progress and the improvement of people's living standards of society, flexible electronic device and the wearable product of intelligence are received
Increasing concern.Artificial electron's skin, flexible touch display screen, intelligent watch, health and motion monitoring product etc. occur
In the work and life of people.These flexible electronic devices need supporting battery can normal work, it is and current
Battery does not possess self-charging function not only, and cruising time is short, and which greatly limits the practical application of flexible electronic device effect
Really.
Widest application is to combine photovoltaic solar cell module and ultracapacitor or lithium ion battery etc. at present,
It is applied to so that the storage device of energy collecting device and high-energy is directly integrated in wearable electronic system.However, solar energy
The condition of work of battery depends on the weather situation and the extraneous factor such as day alternates with night, therefore, solar cell long lasting for
There is significant limitation in terms of power supply.
The birth of friction nanometer power generator provides effective solution route for these problems.It is not advised by collecting human body
Then move the mechanical energy of generation and be translated into electric energy, it is possible to achieve energized whenever and wherever possible for flexible electronic device.It is existing
Flexible friction nano generator for being powered for flexible electronic device can for example include following several：With flexible aluminium foil and
PDMS films construct arcuate contact separate type friction nanometer power generator；With the PET film of ITO electrode is coated with as substrate, fep film is placed on
The superiors contact as friction material with exterior object；A kind of ultra-thin rollable paper of contact separation formula is constituted with blank sheet of paper and PTFE
Base friction nanometer power generator etc..But these devices can only meet the flexibility in two dimensional surface, it is difficult to suitable for wearable system.
Most frequent position is arthrogryposis, the rotation of flexible and waist etc. in physical activity, therefore, probes into out a kind of drawing
The stretchable friction nanometer power generator of the better performances such as stretching, bend, distorting has very important significance.However, physical activity
In the motion at most frequent position be irregular, so the output for being converted into friction nanometer power generator is also unstable peak value
The output of exchange, it is impossible to be directly powered, rubbed therefore, it is also desirable to can convert and store with reference to one kind for flexible electronic device
The energy storage device of the electric energy of nano generator is wiped, the system generated electricity with energy storage integrated is formed.
The content of the invention
It was found by the inventors of the present invention that flexible electronic device such as wearable electronic may be in the state of water
And the state being bent, and be that can not be in have water before not being packaged in existing flexible automatic power system
State.And in automatic power system, even if there is flexible ultracapacitor, its be also can not waterproof, and
Deformability is poor.
The purpose of the present invention is to meet the power demands now for portable wearable electronic.In order to meet now
The demand of society, such as the portable of flexible integration as wearable display, electronic skin and distributing sensor is worn
Wear equipment fast-developing.So the power supply of these equipment needs also exist for meeting flexible, wearable, light etc. require.
A further object of the invention is to provide for a kind of washable, deformable self-contained electric system, to realize
The popularization and application of flexible electronic device.
The invention provides a kind of stretchable self-contained electric system based on foldable carbon paper, including：
Stretchable friction nanometer power generator, it includes silicon rubber and the first carbon paper electrode, and first carbon paper electrode is set
Into being sealed in the silicon rubber；
Stretchable ultracapacitor, it is arranged to be sealed in the silicon rubber, and is spaced apart with first carbon paper
Set, it is configured to deform under extraneous tensile force, folding force and/or torsion, and in the tensile force, bending
Substantially restored to the original state when power and/or torsion disappearance；With
Rectifier bridge, for the ac signal of the stretchable friction nanometer power generator output to be converted into direct current telecommunications
Number, and the DC signal is exported to the stretchable solid-state super capacitor.
Further, first carbon paper electrode be configured to it is folding, to cause first carbon paper electrode first
Preset direction has tensility.
Further, first carbon paper electrode is folding is configured to sawtooth pattern, city wall type or sinusoidal.
Further, the quantity of the stretchable ultracapacitor is multiple, the multiple stretchable ultracapacitor string
Connection connection.
Further, each stretchable ultracapacitor be configured to it is folding, to cause the stretchable super capacitor
Device has tensility in the second preset direction；
Wherein, multiple stretchable ultracapacitors being connected in series are configured to sawtooth pattern, city wall type or sinusoidal.
Further, the stretchable ultracapacitor includes：
Two layers of second carbon paper electrodes, second carbon paper electrode is constructed to be permeable to be folded along a fold line；
Solid electrolyte, it is applied separately at the surface of two layers of second carbon paper electrodes；With
Barrier film, it is arranged between two layers of second carbon paper electrodes for being applied with the solid electrolyte, the barrier film construction
Into can be folded along the fold line.
Further, the number of the stretchable ultracapacitor is adjusted according to extraneous motion frequency, it is described to cause
The electric signal size that the equivalent capacity of stretchable ultracapacitor is exported with stretchable friction nanometer power generator matches.
Especially, present invention also offers a kind of preparation method of the stretchable self-contained electric system based on foldable carbon paper,
Comprise the following steps：
The preparation process of first carbon paper electrode：First carbon paper electrode is folded according to predetermined pattern；
The preparation process of stretchable ultracapacitor：Two layers of second carbon paper electrodes are provided, respectively in two layers of second carbon
Apply solid electrolyte at the surface of paper electrode, one layer of barrier film is arranged on to two layers of second carbon for being applied with the solid electrolyte
Between paper electrode, the barrier film is pressed and dried with two layers of second carbon paper electrodes for being applied with the solid electrolyte,
Prepare stretchable ultracapacitor；
Seal step：The first carbon paper electrode folded and the stretchable ultracapacitor are sealed in silicon rubber,
Wherein, first carbon paper electrode and the silicon rubber constitute stretchable friction nanometer power generator；
Electrical connecting step：The stretchable friction nanometer power generator and the stretchable ultracapacitor are passed through into rectifier bridge
It is attached, the ac signal of the stretchable friction nanometer power generator output is converted into DC signal, and by institute
DC signal is stated to export to the stretchable solid-state super capacitor.
Further, first carbon paper electrode be configured to it is folding, to cause first carbon paper electrode first
Preset direction has tensility；
Wherein, the stretchable ultracapacitor be configured to it is folding, to cause the stretchable ultracapacitor to exist
Second preset direction has tensility.
Especially, present invention also offers a kind of wearable electronic, the wearable electronic can from above-mentioned
Stretch self-contained electric system and obtain electricity.
The solution of the present invention, inventor overcomes technology custom, and ultracapacitor is not used as a single device
The outside of friction nanometer power generator is arranged on, but is sealed in the inside of friction nanometer power generator.Also, present invention
People has found to be packaged the first carbon paper electrode and ultracapacitor using silicon rubber in a creative way, while solving prior art
The problem of overwhelming majority that middle self-charging system is present.Friction nanometer power generator and ultracapacitor are packaged into an entirety,
The size of device can not only greatly be reduced, additionally it is possible to friction nanometer power generator hair and can be collected with extraordinary tensility
The performance of the electric energy gone out.
Further, silicon rubber serves not only as the frictional layer of friction nanometer power generator, also as friction nanometer power generator and
The seal of ultracapacitor so that the self-charging system has water resistance while having tensility energy.In addition, silicon rubber
Glue, the first carbon paper electrode and ultracapacitor are respectively provided with certain deformability so that the self-charging system has certain on the whole
Deformability, can bear stretching, bending, distortion and the crimp force in the external world.
Further, according to the solution of the present invention, due to being used as composition friction nanometer hair using silicon rubber, carbon paper electrode etc.
The parts of motor and ultracapacitor, these raw materials are cheap and easily-available so that the cost of the self-charging system is relatively low.
According to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will be brighter
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the schematic of the stretchable self-contained electric system according to an embodiment of the invention based on foldable carbon paper
View；
Fig. 2 is the preparation method of the stretchable self-contained electric system according to an embodiment of the invention based on foldable carbon paper
Indicative flowchart；
Fig. 3 is the open-circuit voltage of stretchable self-contained electric system according to an embodiment of the invention at different frequencies
(Voc), short circuit current flow (Isc) and short-circuit electricity (Qsc) output；
Fig. 4 is the average output power of stretchable self-contained electric system according to an embodiment of the invention at different frequencies
Density (σtr)；
Fig. 5 is stretchable self-contained electric system according to an embodiment of the invention in stretching, bending, distortion and curly
Open-circuit voltage (V under stateoc), short circuit current flow (Isc) and transfer charge amount (Qsc)；
Fig. 6 is open-circuit voltage (V of the stretchable self-contained electric system according to an embodiment of the invention before and after washingoc),
Short circuit current flow (Isc) and transfer charge amount (Qsc)；
Fig. 7 is stretchable ultracapacitor according to an embodiment of the invention in different scanning rates (20~100mV/
S) the cyclic voltammetry scan performance diagram under；
Fig. 8 is stretchable ultracapacitor according to an embodiment of the invention under different electric currents (50~200 μ A)
Constant current charge-discharge curve map；
Fig. 9 is that stretchable self-contained electric system according to an embodiment of the invention collects mechanical energy and storage under 5Hz frequencies
The charge graph deposited, and utilize the discharge curve of the system drive electronic watch；
Figure 10 is the working circuit diagram of stretchable self-contained electric system according to an embodiment of the invention.
Embodiment
Fig. 1 shows the stretchable self-contained electric system 100 according to an embodiment of the invention based on foldable carbon paper
Perspective schematic view.As shown in figure 1, the stretchable self-contained electric system 100 can include stretchable friction nanometer power generator 110,
Stretchable ultracapacitor 120 and rectifier bridge 130 (not shown).The stretchable friction nanometer power generator 110 is used for will be outer
Portion's mechanical energy is converted into electric energy, and the stretchable ultracapacitor 120 is used to send the stretchable friction nanometer power generator 110
Electric energy stored, the rectifier bridge 130 is used for the ac signal that exports stretchable friction nanometer power generator 110 and is converted into
DC signal, and the DC signal is exported to stretchable solid-state super capacitor.
As shown in figure 1, the stretchable friction nanometer power generator 110 can include the carbon paper electrode 10 of silicon rubber 20 and first.
Wherein, the first carbon paper electrode 10 is sealed in the silicon rubber 20, for example, be cast in the silicon rubber 20.This first
Carbon paper electrode 10 can be coated and obtained or directly purchase on A4 paper 1 using pencil, therefore, first carbon paper
Electrode 10 is cheap and easily-available.The stretchable ultracapacitor 120 is arranged to be sealed in the silicon rubber 20, and with first carbon paper
2 are spaced apart setting, and it is configured to deform under extraneous tensile force, folding force and/or torsion, and in the stretching
Substantially restored to the original state when power, folding force and/or torsion disappearance.
The operation principle of the stretchable friction nanometer power generator 110 is：When external object is received in motion process with friction
Rice generator rubs, because silicon rubber 20 has the stronger ability for attracting electronics, so a part of electrons are from the external world
The surface of object is transferred to the surface of silicon rubber 20.And when external object is separated with friction nanometer power generator, this part electronics
The surface of silicon rubber 20 has been left in, and due to the coupling of electrostatic induction, then can have been produced in the first carbon paper electrode 10
The positive charge of amount balances the electronics on the surface of silicon rubber 20.In the mode of operation of single electrode, the first carbon paper electrode 10 is ground connection
, an electrical potential difference can be so produced between the first carbon paper electrode 10 and the earth, free electron is driven from the first carbon paper electrode
10 shift to the earth, while the output signal of an instantaneous voltage x current will be provided.When the enrichment electronics on silicon rubber 20
When being neutralized completely by the induced positive in the first carbon paper electrode 10, there would not be electricity again between the first carbon paper electrode 10 and the earth
Lotus is shifted, and the output signal of voltage or electric current will not be now produced again.When external object is again adjacent to friction nanometer power generator,
The electronics on the surface of silicon rubber 20 is gradually decreased, and the induced positive in the first carbon paper electrode 10 is also reduced accordingly, in order to balance
The change of electrical potential difference, electronics is shifted from the earth to the first carbon paper electrode 10 again, provides an instantaneous output signal in opposite direction.
The action of contact separation is so repeated continuously, the mechanical energy that external object is moved can be then converted into by friction nanometer power generator
Electric energy.
In the embodiment shown in fig. 1, first carbon paper electrode 10 is folding.It has multiple along first carbon paper
The fold line of the length direction formation of electrode 10, the distance between two neighboring fold line substantially equal, first carbon
Paper electrode 10 can be folded along the plurality of fold line, to allow it can with certain on the first preset direction
Tensile property.The section of first carbon paper electrode 10 can be sawtooth pattern.In other embodiments, first carbon paper electrode 10
Section can be city wall type or sinusoidal.
The quantity of the stretchable ultracapacitor 120 is multiple, can be connected between multiple stretchable ultracapacitors 120
Connection.It is, of course, understood that the quantity of the stretchable ultracapacitor 120 can be according to the motion frequency of external object
To adjust, to cause the equivalent capacity and the telecommunications of stretchable friction nanometer power generator 110 output of stretchable ultracapacitor 120
Number size matches.Each stretchable ultracapacitor 120 is folding, and it has a fold line, and this is stretchable super
Capacitor 120 can be folded along a foldable line, to cause the stretchable ultracapacitor 120 default second
Direction has tensility.In other embodiments, the stretchable ultracapacitor 120 can include multiple fold lines, and it can
To be folded along the plurality of fold line.Multiple stretchable ultracapacitors 120 being connected in series can be configured to sawtooth pattern,
City wall type or sinusoidal.
The stretchable ultracapacitor 120 can include two layers second carbon paper electrodes 30, solid electrolyte and barrier film 40.Should
Solid electrolyte can be PVA/KOH solid electrolytes, and it is applied separately at the surface of two layers of second carbon paper electrodes 30.Should
Barrier film 40 can be conducting polypropylene barrier film 40, its be arranged on be applied with the solid electrolyte two layers of second carbon paper electrodes 30 it
Between.Two layers of second carbon paper electrodes 30, solid electrolyte and the barrier film 40 are compacted and drying forms the stretchable ultracapacitor
120.The stretchable ultracapacitor 120 is configured to folding, i.e. second carbon paper electrode 30, solid electrolyte and barrier film 40
It can be folded.
Fig. 2 shows the stretchable self-contained electric system 100 according to an embodiment of the invention based on foldable carbon paper
The indicative flowchart of preparation method.As shown in Fig. 2 the preparation method may include steps of：
S100, the first carbon paper electrode 10 preparation process：First carbon paper electrode 10 is folded according to predetermined pattern；
S200, stretchable ultracapacitor 120 preparation process：Two layers of second carbon paper electrodes 30 are provided, respectively this two
Apply solid electrolyte at the surface of the second carbon paper electrode 30 of layer, one layer of barrier film 40 is arranged on and is applied with the solid electrolyte
Between two layers of second carbon paper electrodes 30, the barrier film 40 and two layers of second carbon paper electrodes 30 for being applied with the solid electrolyte are carried out
Press and dry, prepare stretchable ultracapacitor 120；
S300, sealing step：The first carbon paper electrode 10 folded and the stretchable ultracapacitor 120 are sealed in silicon
In rubber 20, wherein, first carbon paper electrode 10 and the silicon rubber 20 constitute stretchable friction nanometer power generator 110；
S400, electrical connecting step：The stretchable friction nanometer power generator 110 and the stretchable ultracapacitor 120 are led to
Over commutation bridge 130 is attached, and the ac signal that the stretchable friction nanometer power generator 110 is exported is converted into direct current
Signal, and the DC signal is exported give the stretchable solid-state super capacitor.
In the preparation process of the first carbon paper electrode 10, it can be entered with common picture pencil on the two sides of an A4 paper 1
Row is equably smeared, and to obtain a carbon paper 2, the size further according to required carbon paper 2 is cut.Folded on carbon paper 2
Go out multiple folding lines, the spacing of adjacent two fold lines in the multiple folding lines is equal.By carbon paper 2 along the multiple folding lines
Folded, so that it possesses stretchable performance in a certain direction, so obtain the first carbon paper electrode 10.
In the preparation process of stretchable ultracapacitor 120, specifically it may comprise steps of：
S210, multiple carbon papers 2 are provided, the carbon paper 2 can be the carbon paper 2 acquired according to above-mentioned steps, and carbon paper 2 is cut
15mm × 6mm size is cut into, to be used as the second carbon paper electrode 30；
S220, the uniform smearing PVA/KOH solid electrolytes in two the second carbon paper electrodes 30 sheared；
S230, one conducting polypropylene barrier film 40 of offer, the size of the conducting polypropylene barrier film 40 is 15mm × 6mm, and will
The barrier film 40 is placed between two the second carbon paper electrodes 30 in step S220；
S240, the obtained samples of step S230 are placed in special clamping plate be clamped, to be applied with solid
Two the second carbon paper electrodes 30 and conducting polypropylene barrier film 40 of electrolyte are fully contacted；
S250, the sample for obtaining step S240 are spontaneously dried to remove unnecessary moisture, obtain waiting to set after a period of time
The ultracapacitor 50 of meter；
S260, the ultracapacitor for obtaining step S250 are folded along a fold line, stretchable super to obtain
Capacitor 120.
In sealing step, the first carbon paper electrode 10 folded and the stretchable ultracapacitor 120 are sealed in silicon
Following steps are specifically included in rubber 20：
S310, will be according to 20:The silicon rubber 20 and curing agent of 1 proportional arrangement are stirred mixing；
S320, the mixture mixed using step S310 are to the first carbon paper electrode 10 and at least one stretchable super electricity
Container 120 is poured；
S330, etc. it is to be solidified, the first carbon paper electrode 10 and at least one stretchable ultracapacitor 120 are sealed in this
In silicon rubber 20.
Wherein, in step S310, the ratio of silicon rubber 20 and curing agent can also be 10:1、40:1、60:1、80:1 or
100:1 etc., or 10-100:Any value in 1.In step s 320, the quantity of stretchable ultracapacitor 120 can be with
It is configured, is connected in series between multiple stretchable ultracapacitors 120 according to actual needs.
Present invention also offers a kind of wearable device, the wearable device is obtained from above-mentioned stretchable self-contained electric system 100
Obtain electricity.It is understood that the present invention can also provide other flexible electronics such as intelligent watch, health and motion monitoring product
Device, and obtain electricity from above-mentioned stretchable self-contained electric system 100.
Fig. 3 shows the open-circuit voltage of the stretchable self-contained electric system 100 of one embodiment of the invention at different frequencies
(Voc), short circuit current flow (Isc) and short-circuit electricity (Qsc) output.As shown in figure 3, external object motion frequency by
When 0.5Hz increases to 2.5Hz, the open-circuit voltage of stretchable self-contained electric system 100 is maintained at 330V or so, and transfer charge amount is kept
In 119nC, numerical value at different frequencies is basically identical.And short circuit current flow increasing in the trend incrementally increased with frequency,
Up to 18.57 μ A when maximum.
Fig. 4 shows stretchable self-contained electric system 100 according to an embodiment of the invention being averaged at different frequencies
Output power density (σtr).As shown in figure 4, under each fixed frequency, all in the presence of a resistance value of load 140 matched,
So that loading the average output power density (σ of friction nanometer power generator under 140 resistance hereintr) reach maximum.And this
Reduce with resistance value with the increase of friction nanometer power generator working frequency.When working frequency is 2.5Hz, the build-out resistor
It is worth for 1G Ω.
Fig. 5 show stretchable self-contained electric system 100 according to an embodiment of the invention stretching, bending, distort with
And open-circuit voltage (the V under rolled stateoc), short circuit current flow (Isc) and transfer charge amount (Qsc).As can be known from Fig. 5, it is of the invention
Stretchable self-contained electric system 100 have certain output in the case of different deformation, this demonstrate the present invention it is stretchable
Self-contained electric system 100 can in the case of Various Complex collecting mechanical energy.
Fig. 6 shows open circuit electricity of the stretchable self-contained electric system 100 according to an embodiment of the invention before and after washing
Press (Voc), short circuit current flow (Isc) and transfer charge amount (Qsc).As can be seen from Figure 6, stretchable self-contained electric system 100 of the invention
Output washing before and after there is no change, illustrate the stretchable self-contained electric system 100 with well washable property.
In order to illustrate that the stretchable ultracapacitor 120 in the present invention has good electric conductivity and higher capacitive character
Energy.Charge-discharge test also has been carried out to stretchable ultracapacitor 120 in the present invention.Fig. 7 is shown according to a reality of the invention
Apply cyclic voltammetry scan characteristic of the single stretchable ultracapacitor 120 of example under different scanning rates (20~100mV/s)
Curve map.As can be seen from Figure 7, for single stretchable ultracapacitor 120, its cyclic voltammetry curve is sweeping the condition of speed more slowly
Under, cyclic voltammetry curve shows good capacitance characteristic close to rectangle.With the increase for sweeping speed, cyclic voltammetry curve is gradually
Deviate rectangle, show larger resistance characteristic.
Fig. 8 is stretchable ultracapacitor 120 according to an embodiment of the invention under different electric currents (50~200 μ A)
Constant current charge-discharge curve map.Wherein, the quantity of the stretchable ultracapacitor 120 during test is one, and is carrying out perseverance
The size of current that current charge-discharge is used when electric is respectively 50 μ A, 80 μ A, 100 μ A and 200 μ A, and voltage range is 0-0.8V.From Fig. 8
Understand, charging and discharging curve does not occur obvious resistance drop, thus demonstrates the stretchable ultracapacitor 120 outstanding
Capacitive property and excellent electric conductivity.
In order to match the output of friction nanometer power generator, serial connected super capacitor can reduce overall capacity and can be with
Increase controllable voltage so that stretchable self-charging system is applicable to more electronic equipments.Fig. 9 is shown according to the present invention
The stretchable self-contained electric system 100 of one embodiment collects the mechanical energy under 5Hz frequencies and the charge graph stored, Yi Jili
With the discharge curve of system drive load 140.Figure 10 shows stretchable self-powered according to an embodiment of the invention
The working circuit diagram that system 100 is powered for load 140.The first switch 150 and second of control break-make is shown in Figure 10
Switch 160, and show connected load 140.The load 140 can be wearable electronic, such as electronic watch.
The solution of the present invention, inventor overcomes technology custom, and ultracapacitor is not used as a single device
The outside of friction nanometer power generator is arranged on, but is sealed in the inside of friction nanometer power generator.Also, present invention
People has found to be packaged the first carbon paper electrode 10 and ultracapacitor using silicon rubber 20 in a creative way, while solving existing
The problem of overwhelming majority that self-charging system is present in technology.By friction nanometer power generator and ultracapacitor be packaged into one it is whole
Body, can not only greatly reduce the size of device, additionally it is possible to and can collect friction nanometer generating with extraordinary tensility
The performance for the electric energy that machine is sent.
In addition, silicon rubber 20 serves not only as the frictional layer of friction nanometer power generator, friction nanometer power generator and super is also used as
The seal of level capacitor so that the self-charging system has water resistance while having tensility energy.In addition, silicon rubber
20th, the first carbon paper electrode 10 and ultracapacitor are respectively provided with certain deformability so that the self-charging system has one on the whole
Determine deformability, stretching, bending, distortion and the crimp force in the external world can be born.
In addition, according to the solution of the present invention, due to being used as composition friction nanometer hair using silicon rubber 20, the electrode of carbon paper 2 etc.
The parts of motor and ultracapacitor, these raw materials are cheap and easily-available so that the cost of the self-charging system is relatively low.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of stretchable self-contained electric system based on foldable carbon paper, including：
Stretchable friction nanometer power generator, it includes silicon rubber and the first carbon paper electrode, first carbon paper electrode be arranged to by
It is sealed in the silicon rubber；
Stretchable ultracapacitor, it is arranged to be sealed in the silicon rubber, and is spaced apart setting with first carbon paper,
It is configured to deform under extraneous tensile force, folding force and/or torsion, and the tensile force, folding force and/
Or substantially restored to the original state during torsion disappearance；With
Rectifier bridge, for the ac signal of the stretchable friction nanometer power generator output to be converted into DC signal, and
The DC signal is exported to the stretchable solid-state super capacitor.
2. stretchable self-contained electric system according to claim 1, wherein, first carbon paper electrode is configured to foldable
, to cause first carbon paper electrode that there is tensility in the first preset direction.
3. stretchable self-contained electric system according to claim 2, wherein, first carbon paper electrode is folding to be configured to
Sawtooth pattern, city wall type or sinusoidal.
4. the stretchable self-contained electric system according to Claims 2 or 3, wherein, the quantity of the stretchable ultracapacitor
To be multiple, the multiple stretchable ultracapacitor is connected in series.
5. stretchable self-contained electric system according to claim 4, wherein, each stretchable ultracapacitor is configured to roll over
Folded, to cause the stretchable ultracapacitor that there is tensility in the second preset direction；
Wherein, multiple stretchable ultracapacitors being connected in series are configured to sawtooth pattern, city wall type or sinusoidal.
6. the stretchable self-contained electric system according to any one of claim 1-3,5, wherein, the stretchable super capacitor
Device includes：
Two layers of second carbon paper electrodes, second carbon paper electrode is constructed to be permeable to be folded along a fold line；
Solid electrolyte, it is applied separately at the surface of two layers of second carbon paper electrodes；With
Barrier film, it is arranged between two layers of second carbon paper electrodes for being applied with the solid electrolyte, and the barrier film is constructed to be permeable to
It is enough to be folded along the fold line.
7. stretchable self-contained electric system according to claim 6, wherein, adjusted according to extraneous motion frequency described in can draw
The number of ultracapacitor is stretched, to cause the equivalent capacity and stretchable friction nanometer power generator of the stretchable ultracapacitor
The electric signal size of output matches.
8. a kind of preparation method of the stretchable self-contained electric system based on foldable carbon paper, comprises the following steps：
The preparation process of first carbon paper electrode：First carbon paper electrode is folded according to predetermined pattern；
The preparation process of stretchable ultracapacitor：Two layers of second carbon paper electrodes are provided, respectively in two layers of second carbon papers electricity
Apply solid electrolyte at the surface of pole, one layer of barrier film is arranged on to two layers of the second carbon papers electricity for being applied with the solid electrolyte
Between pole, the barrier film is pressed and dried with two layers of second carbon paper electrodes for being applied with the solid electrolyte, is prepared
Obtain stretchable ultracapacitor；
Seal step：The first carbon paper electrode folded and the stretchable ultracapacitor are sealed in silicon rubber, wherein,
First carbon paper electrode and the silicon rubber constitute stretchable friction nanometer power generator；
Electrical connecting step：The stretchable friction nanometer power generator and the stretchable ultracapacitor are carried out by rectifier bridge
Connection, DC signal is converted into by the ac signal of the stretchable friction nanometer power generator output, and will be described straight
Electric signal output is flowed to the stretchable solid-state super capacitor.
9. preparation method according to claim 8, wherein, first carbon paper electrode be configured to it is folding, to cause
First carbon paper electrode has tensility in the first preset direction；
Wherein, the stretchable ultracapacitor be configured to it is folding, to cause the stretchable ultracapacitor second
Preset direction has tensility.
It is stretchable any one of the wearable electronic from claim 1-7 10. a kind of wearable electronic
Self-contained electric system obtains electricity.
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