CN106898825B - A kind of preparation method of bipolarity Zinc ion battery - Google Patents
A kind of preparation method of bipolarity Zinc ion battery Download PDFInfo
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- CN106898825B CN106898825B CN201710302865.7A CN201710302865A CN106898825B CN 106898825 B CN106898825 B CN 106898825B CN 201710302865 A CN201710302865 A CN 201710302865A CN 106898825 B CN106898825 B CN 106898825B
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- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000006258 conductive agent Substances 0.000 claims abstract description 8
- 239000003792 electrolyte Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 239000011888 foil Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 7
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 4
- 239000007773 negative electrode material Substances 0.000 claims description 4
- 239000002296 pyrolytic carbon Substances 0.000 claims description 4
- 239000008151 electrolyte solution Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920006280 packaging film Polymers 0.000 claims description 3
- 239000012785 packaging film Substances 0.000 claims description 3
- 239000007774 positive electrode material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 claims description 2
- BPKGOZPBGXJDEP-UHFFFAOYSA-N [C].[Zn] Chemical compound [C].[Zn] BPKGOZPBGXJDEP-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000001879 gelation Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 229910000906 Bronze Inorganic materials 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000010974 bronze Substances 0.000 description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002109 single walled nanotube Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/38—Construction or manufacture
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
A kind of preparation method of bipolarity Zinc ion battery both formed one layer of barrier film in bipolar current collector matrix surface using resin, and prevented electrolyte permeability from short circuit occurs by uniformly coating one layer of conductive layer in bipolar current collector matrix surface；The surface of bipolar current collector matrix is evenly distributed in using the conductive agent in conductive layer again, not only increase the uniformity of bipolar current collector matrix surface distribution of charges, the contact resistance between positive/negative side and bipolarity collection matrix is also greatly lowered simultaneously, and adhesive ability between the two can be improved, improve battery performance；Diaphragm can be made to be swollen by way of heating pressurization, be crosslinked with binder, by cold pressing by diaphragm gelation, have the function that reduce free state electrolyte.
Description
Technical field
The present invention relates to a kind of preparation methods of bipolarity Zinc ion battery.
Background technique
Environmental pollution and oil shortage are various countries worldwides all in the problem faced, and electric car seemingly this two
A perfect solution of problem --- the rigid demand for meeting people's daily trip does not cause direct dirt to environment again
Dye.And one of the key technology of Development of EV is exactly power battery.Zinc ion battery has energy density height, operating voltage
Height has extended cycle life, the series of advantages of memory-less effect, has as power battery potentiality for electric vehicle.It is applicable
Electric car, needing for multiple power batteries to be together in series ensures output power.However series connection is non-to battery with two side terminals requirement
Chang Gao, the safety of Prospect of EVS Powered with Batteries and consistency problem have become the technical bottleneck of Development of Electric Vehicles at present.
Bipolar battery technique is combined as a kind of conventional batteries manufacturing technology with Zinc ion battery, is had and is solved current driving force electricity
The ability for the problem that pond is encountered.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of a kind of bipolarity Zinc ion batteries to solve the above problems
Preparation method.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
A kind of preparation method of bipolarity Zinc ion battery, includes the following steps:
1) by conductive agent, resin, cure-crosslinking agent, solvent according to 2%, 4%, (0.3-0.8) %, (93.2-93.7) %
(wt%) ratio is mixed into electrocondution slurry；
2) is using composite insulating foil as bipolar current collector matrix, by electrocondution slurry made from previous step according to certain face
The tow sides coated in bipolar current collector matrix of even density, drying form the conductive layer of (0.2-10) um, obtain double
Polarity collector；
3) positive electrode active materials, conductive agent, binder are mixed in solvent by, stir to get finely dispersed slurry, coating
In the side of the conductive layer, drying obtains side of the positive electrode；Then negative electrode active material, conductive agent, binder, thickener are mixed
In solvent, finely dispersed slurry is stirred to get, is coated on the other side of conductive layer, dries, obtains negative side, the anode
Side is identical with the thickness of negative side；
4) bipolar electrode is obtained after roll-in.
5) coats sealant at bipolar electrode edge, and the thickness of the sealant is identical as the thickness of the side of the positive electrode；
6) will be located among adjacent side of the positive electrode and negative side containing the coating diaphragm of P (VDF-HFP), neatly be superimposed phase
Even, it adds appropriate electrolyte, forms anode-diaphragm-negative pole structure, both ends are positive plate and negative plate, wherein injecting electrolytic solution
It is to be carried out during being superimposed each layer；
7) makes battery core, is then charged into packaging film by hot sealing glue and the positive/negative plate at both ends；
8) completes the battery core after encapsulation, (45-60) DEG C environment (24-48) H, with first (35-80) DEG C heat of hot cold press
2min, pressure (0.1-0.5) MPa are pressed, then (5-20) DEG C cold pressing 2min, pressure (0.1-0.5) MPa obtains condensed state battery,
It is melted into again, finally seals to obtain high voltage bipolarity Zinc ion battery by wrapping film.
Further, the positive electrode active materials are the manganese dioxide of crystal form and the one or two of lithium manganate material.
Further, the negative electrode active material is active carbon, zinc powder or the zinc powder or the three that are coated with pyrolytic carbon
Mixture after being mixed in a certain ratio.
The utility model has the advantages that the present invention compared with prior art, has the advantages that
By uniformly coating one layer of conductive layer in bipolar current collector matrix surface, both using resin in bipolarity collection
Fluid matrix surface forms one layer of barrier film, prevents electrolyte permeability from short circuit occurs；It is again equal using the conductive agent in conductive layer
The even surface for being distributed in bipolar current collector matrix not only increases the uniform of bipolar current collector matrix surface distribution of charges
Property, while the contact resistance being also greatly lowered between positive/negative side and bipolarity collection matrix, and between the two attached can be improved
Ability, improve battery performance；P (VDF-HFP) can be made to be swollen by way of heating pressurization, be handed over binder
Connection has the function that reduce free state electrolyte by cold pressing by P (VDF-HFP) gelation；The sealing at bipolar electrode edge
Glue prevents bipolar electrode marginal portion short-circuit, increases the safety of battery by hot sealing.
Detailed description of the invention
Fig. 1 is the assembly structure diagram of bipolarity Zinc ion battery core；
Fig. 2 is the structural schematic diagram of bipolar electrode in bipolarity Zinc ion battery core shown in Fig. 1；
Fig. 3 is the structural schematic diagram of conductive layer in bipolar electrode shown in Fig. 2.
Specific embodiment
To deepen the understanding of the present invention, by several drawings and examples, the invention will be described in further detail below.
With reference to Fig. 1, attached drawing 2 and 3, the preparating example of bipolar electrode is as follows:
Embodiment 1
1. by graphite, epoxy resin, cure-crosslinking agent, solvent according to 2%, 4%, 0.8%, 93.2% (wt%) ratio
It is mixed into electrocondution slurry；
2. using a piece of 40um aluminum bronze composite insulating foil as bipolar current collector matrix 1, by electrocondution slurry made from previous step
It is uniformly coated in the tow sides of bipolar current collector matrix 1 according to certain surface density, dries, forms the conductive layer of 10um
2, bipolar current collector is obtained, wherein in conductive layer 2, epoxy resin 12 is evenly applied to 1 side table of bipolar current collector matrix
Face forms one layer of barrier film, and graphite 11 is evenly distributed in the surface of epoxy resin 12.
3. LiMn2O4, carbon black, binder are mixed in solvent, finely dispersed slurry is stirred to get, is coated on conductive layer 2
Side, drying, obtain side of the positive electrode 3；Then zinc powder, carbon nanotube, binder, thickener are mixed in solvent, are stirred to get
Finely dispersed slurry is coated on the other side of conductive layer 2, and drying obtains negative side 4, the side of the positive electrode 3 and negative side 4
Thickness is identical.
4. obtaining bipolar electrode 6 after roll-in；It is of course also possible to which 3 groups of only bipolar current collector and side of the positive electrode are made
At positive plate 8 or the only negative plate 9 that forms of bipolar current collector and negative side 4.
Embodiment 2
The present embodiment unlike the first embodiment, when preparing electrocondution slurry, replaces graphite, phenol using single-walled carbon nanotube
Urea formaldehyde replace epoxy resin, cure-crosslinking agent, solvent ratio be 0.3%, 93.7% (wt%)；And it is compound with 5um aluminium nickel
Foil replace 40um aluminum bronze composite insulating foil make bipolar current collector matrix 1, be formed by conductive layer 2 with a thickness of 0.2um；Make shape
LiMn2O4, carbon fiber is replaced to replace carbon black using manganese dioxide at the slurry of side of the positive electrode 3；The slurry that production forms negative side 4 is adopted
The mixture of zinc powder, graphite and carbon black is replaced to replace carbon nanotube with the zinc powder for being coated with pyrolytic carbon.
Embodiment 3
The present embodiment unlike the first embodiment, when preparing electrocondution slurry, using graphite, carbon black, carbon nanotube, single wall
Carbon nanotube, carbon fiber composition replace graphite, polyurethane replace epoxy resin, cure-crosslinking agent, solvent ratio be
0.5%, 93.5% (wt%)；And 40um aluminum bronze composite insulating foil is replaced to make bipolar current collector matrix 1, institute with 10um stainless steel foil
The conductive layer 2 of formation with a thickness of 1um；The slurry that production forms negative side 4 replaces zinc powder using active carbon.
Embodiment 4
The present embodiment replaces 40um aluminum bronze composite insulating foil to make bipolarity afflux unlike the first embodiment, with 20um copper foil
Body matrix 1, be formed by conductive layer 2 with a thickness of 5um；Production forms the slurry of negative side 4 using active carbon, zinc powder or cladding
There is the mixture of the zinc powder of pyrolytic carbon to replace zinc powder.
Embodiment 5
The present embodiment replaces 40um aluminum bronze composite insulating foil to make bipolarity afflux unlike the first embodiment, with 30um nickel foil
Body matrix 1.
The preparation embodiment of bipolarity Zinc ion battery is as follows:
Embodiment 6
1. preparing the bipolar electrode 6 in embodiment 1；
2. coating sealant 7, the thickness and side of the positive electrode 3 (or negative side 4) of the sealant 7 at 6 edge of bipolar electrode
Thickness it is identical；
3. the coating diaphragm 5 that 10um contains pure P (VDF-HFP) is located among adjacent side of the positive electrode 3 and negative side 4, it is whole
Neat superposition is connected, and adds appropriate electrolyte, forms anode-diaphragm-negative pole structure, and both ends are positive plate 8 and negative plate 9, wherein
Injecting electrolytic solution is carried out during being superimposed each layer；
4. making battery core by hot sealing glue 7 and the positive/negative plate at both ends, being then charged into packaging film；
5. completing the battery core after encapsulation, 60 DEG C of environment 24H are shelved, with the first 80 DEG C of hot pressing 2min of hot cold press, pressure
0.1MPa, then 20 DEG C of cold pressing 2min, pressure 0.5MPa obtain condensed state battery, then are melted into, and finally pass through wrapping film
Sealing obtains high voltage bipolarity Zinc ion battery.
Embodiment 7
The present embodiment as different from Example 6, using embodiment 2 prepare bipolar electrode 6, using ceramics+P
(VDF-HFP) diaphragm preparation 0.2um coating diaphragm 5 and step 5 difference are the battery cores that will be completed after encapsulation, are shelved
45 DEG C of environment 48H, with hot cold press first 35 DEG C of hot pressing 2min, pressure 0.5MPa, then 5 DEG C of cold pressings 2min, pressure 0.1MPa.
Embodiment 8
The present embodiment coats diaphragm 5 as different from Example 6, using the mixed glue diaphragm preparation of ceramics.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to structure of the invention
Think and range is defined.Without departing from the design concept of the invention, ordinary people in the field is to technology of the invention
The all variations and modifications that scheme is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
It is all described in the claims.
Claims (3)
1. a kind of preparation method of bipolarity Zinc ion battery, characterized by the following steps:
1) by conductive agent, resin, cure-crosslinking agent, solvent according to 2%, 4%, (0.3-0.8) %, (93.2-93.7) %
(wt%) ratio is mixed into electrocondution slurry；
2) is using composite insulating foil as bipolar current collector matrix, by electrocondution slurry made from previous step according to certain surface density
The uniform tow sides for being coated in bipolar current collector matrix, drying form the conductive layer of (0.2-10) um, obtain bipolarity
Collector；
3) positive electrode active materials, conductive agent, binder are mixed in solvent by, stir to get finely dispersed slurry, are coated on institute
The side of conductive layer is stated, dries, obtains side of the positive electrode；Then negative electrode active material, conductive agent, binder, thickener are mixed in molten
In agent, stir to get finely dispersed slurry, be coated on the other side of conductive layer, dry, obtain negative side, the side of the positive electrode and
The thickness of negative side is identical；
4) bipolar electrode is obtained after roll-in；
5) coats sealant at bipolar electrode edge, and the thickness of the sealant is identical as the thickness of the side of the positive electrode；
6) will be located among adjacent side of the positive electrode and negative side containing the coating diaphragm of P (VDF-HFP), and neat superposition is connected, and add
Add appropriate electrolyte, form anode-diaphragm-negative pole structure, both ends are positive plate and negative plate, and wherein injecting electrolytic solution is folded
Each layer is added to carry out in the process；
7) makes battery core, is then charged into packaging film by hot sealing glue and the positive/negative plate at both ends；
8) completes the battery core after encapsulation, (45-60) DEG C environment (24-48) H, with first (35-80) DEG C hot pressing of hot cold press
2min, pressure (0.1-0.5) MPa, then (5-20) DEG C cold pressing 2min, pressure (0.1-0.5) MPa obtains condensed state battery, then
It is melted into, finally seals to obtain high voltage bipolarity Zinc ion battery by wrapping film.
2. a kind of preparation method of bipolarity Zinc ion battery according to claim 1, it is characterised in that: the anode is living
Property material be crystal form manganese dioxide and lithium manganate material one or two.
3. the preparation method of bipolar Zinc ion battery according to claim 1, it is characterised in that: the negative electrode active
Material be active carbon, zinc powder or be coated with pyrolytic carbon zinc powder or three be mixed in a certain ratio after mixture.
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| CN201710302865.7A CN106898825B (en) | 2017-05-03 | 2017-05-03 | A kind of preparation method of bipolarity Zinc ion battery |
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| CN115642217B (en) * | 2021-02-24 | 2024-05-24 | 厦门海辰储能科技股份有限公司 | Manufacturing method of pole piece |
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| CN103703595A (en) * | 2011-07-26 | 2014-04-02 | 日产自动车株式会社 | Collector for bipolar lithium ion secondary batteries |
| CN103390753A (en) * | 2012-05-07 | 2013-11-13 | 日东电工株式会社 | Laminated electrically conductive sheet, producing method thereof, current collector, and bipolar battery |
| CN104577132A (en) * | 2013-10-17 | 2015-04-29 | 北京好风光储能技术有限公司 | Bipolar current collector and preparation method thereof |
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