CN105047937A - Lithium battery core and fabrication method thereof - Google Patents
Lithium battery core and fabrication method thereof Download PDFInfo
- Publication number
- CN105047937A CN105047937A CN201510408807.3A CN201510408807A CN105047937A CN 105047937 A CN105047937 A CN 105047937A CN 201510408807 A CN201510408807 A CN 201510408807A CN 105047937 A CN105047937 A CN 105047937A
- Authority
- CN
- China
- Prior art keywords
- battery core
- core
- elastomer
- elastomer material
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The traditional lithium battery is easy to get failure in safety tests such as heavy object impact, narrow surface squeezing, nailing and the like, moreover, particles or dust caused by core fabrication process form damage to a core aluminum plastic film, and the battery is easy to leak. Aiming at the above problems, the invention discloses a lithium battery core, and the outer surface of the naked core is coated with an insulated elastomer material layer. The invention also discloses a fabrication method of the lithium battery core, and the fabrication method comprises the following steps of: dissolving or dispersing an elastomer material in a non-polar organic solvent to obtain an elastomer solution; coating the outer surface of the naked core with the elastomer solution; and drying to obtain the core of which the surface is coated with the insulated elastomer material layer. The thickness of the insulated elastomer material layer is uniform and can reach 50-500 micrometers, moreover, the insulated elastomer material layer has high adhesive property and can be attached onto the outer surface of the naked core, and the passing rate of the battery safety tests such as heavy object impact, narrow surface squeezing, nailing, dropping and the like can be improved.
Description
Technical field
The present invention relates to technical field of lithium batteries, refer more particularly to a kind of lithium battery electric core and preparation method thereof.
Background technology
Lithium ion battery has the advantages such as voltage is high, volume is little, quality is light, specific capacity is high, memory-less effect, pollution-free, self discharge is little and have extended cycle life relative to other secondary cells, has been widely used in a lot of field such as digital product, electric automobile, hybrid vehicle.Along with the extensive use of lithium ion battery, the security performance of lithium battery also receives increasing concern.
Basically, the safety problem of lithium ion battery is the problem of heat in battery, if the heat produced can not discharge rapidly, battery temperature will constantly raise, the temperature continuing to rise aggravates again the chemical reaction in battery, finally cause battery thermal runaway, until blast, the security incident such as burning.
In order to improve the security performance of lithium ion battery, people propose a lot of method, such as, select the positive and negative pole material of Heat stability is good, electrolyte and additive thereof, can improve the thermal stability of battery; Add overcharge protection additives in the electrolytic solution, effectively can improve the over-charging of battery; Adopt ceramic barrier film, thermal contraction performance and the thermal insulation properties of barrier film can be improved, prevent battery short circuit.Patent CN201243052Y proposes to adopt the method for polarity coating to improve the extruding of battery, the percent of pass of heavy impact, but due to coating charged, still have short circuit and the risk causing burning on fire.But existing lithium battery easily lost efficacy in the safety tests such as heavy impact, leptoprosopy extruding, drift bolt, and the particle produced in battery core manufacturing process or dust form injury to battery core aluminum plastic film, cause the easy leakage of battery.
Summary of the invention
The object of the present invention is to provide a kind of lithium battery electric core and preparation method thereof.
The technical solution used in the present invention is:
A kind of lithium battery electric core, the outer surface of naked battery core is coated with the layer of elastomer material of one deck insulation.
A preparation method for lithium battery electric core, comprises the following steps:
The elastomeric material of insulation is dissolved or dispersed in polar organic solvent, obtains elastomer solution;
Elastomer solution is coated in the outer surface of naked battery core, drying obtains the battery core that surface coverage has insulating elastomer material layer.
Preferably, described coating method is injecting type coating.
Preferably, drying mode is for drying, and bake out temperature is 50-70 DEG C.
Preferably, the concentration of described elastomer solution elastomer is 10%-30%.
Preferably, described elastomer solution coated area is the 50%-90% of naked battery core exterior surface area.
Preferably, the thickness of described layer of elastomer material is 50-500 μm.
Preferably, described elastomeric material is at least one in SIS, polyolefin, polystyrene, polyesters, polyamide, ethylene copolymer, polyisoprene, polybutadiene.
The invention has the beneficial effects as follows:
Existing lithium battery easily lost efficacy in the safety tests such as heavy impact, leptoprosopy extruding, drift bolt, and the particle produced in battery core manufacturing process or dust form injury to battery core aluminum plastic film, cause the easy leakage of battery.For the problems referred to above, the invention provides a kind of lithium battery electric core and preparation method thereof, at outer surface one deck insulating elastomer material layer of naked battery core, this layer of elastomeric material layer thickness is even, 50-500 μm can be reached, and there is stronger adhesive property, the outer surface of naked battery core can be attached to, battery heavy impact, leptoprosopy extruding, drift bolt can be improved and the percent of pass of safety test such as to fall.
Accompanying drawing explanation
Fig. 1 is the structural representation of lithium battery.
The coating thickness distribution map of Fig. 2 is coating thickness when being 300 μm different coating method.
Description of reference numerals:
1-layer of elastomer material; The naked battery core of 2-.
Embodiment
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.In addition, all connection/annexations related in patent, not singly refer to that component directly connects, and refer to and according to concrete performance, can connect auxiliary by adding or reducing, and form more excellent draw bail.Each technical characteristic in the invention, can combination of interactions under the prerequisite of not conflicting conflict.
With reference to Fig. 1, the invention provides a kind of lithium battery electric core, be coated with the layer of elastomer material 1 of one deck insulation at the outer surface of naked battery core 2.Present invention also offers a kind of preparation method of lithium battery electric core, comprise the following steps: the elastomeric material of insulation is dissolved or dispersed in polar organic solvent, obtains elastomer solution; Elastomer solution is coated in the outer surface of naked battery core 2, drying obtains the battery core that surface coverage has insulating elastomer material layer 1.Described coating method is injecting type coating, injecting type is coated with the angle can opened by Control Nozzle, regulates the area of coating elastomeric material layer 1, by controlling injecting time and expulsion pressure, control jet velocity, thus accurately control the thickness of coating elastomeric material layer 1.In course of injection, the solution of elastomeric material is that even diffusion way is attached in naked battery core 2, thus ensures the consistency of layer of elastomer material 1 thickness.Described drying mode is for drying, and bake out temperature is 50-70 DEG C, and the time is 24-72h.Described elastomeric material is SIS, polyolefin, polystyrene, polyesters, at least one in polyamide, ethylene copolymer, polyisoprene and polybutadiene.Described elastomeric material has certain viscosity, can be attached to the surface of naked battery core 2.The concentration of described elastomer solution elastomer is 10%-30%.Described elastomeric material is dissolved or dispersed in organic solvent, the mode be combined with ultrasonic disperse by high-speed stirred.Described organic solvent can be toluene, acetone, alcohol etc., and elastomeric material mixing speed is in organic solvent 800-3000r/min, and mixing time is 24-36h, and the organic solution viscosity of the elastomeric material that dissolving or dispersion obtain is 10000-20000cps.Described elastomer solution coated area is the 50%-90% of naked battery core 2 exterior surface area.The thickness of described layer of elastomer material 1 is 50-500 μm.
comparative example 1:
The mode of winding or lamination is adopted to make naked battery core 2; The baking oven putting into 60 DEG C toasts 24h; Then naked battery core 2 is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 1:
The mode of winding or lamination is adopted to make naked battery core 2; The elastomeric material SIS getting 2g adds in 10g toluene, with the rotating speed high-speed stirred 24h of 1000r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 8000cps; Adopted by the toluene solution of SIS and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 50% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 50 μm, and the baking oven then putting into 60 DEG C toasts 36h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 2:
The mode of winding or lamination is adopted to make naked battery core; The elastomeric material polystyrene getting 2g adds in 20g acetone soln, with the rotating speed high-speed stirred 18h of 1500r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 10000cps; Adopted by the acetone soln of polystyrene and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 80% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 100 μm, and the baking oven then putting into 60 DEG C toasts 48h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 3:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyisoprene and polybutadiene of getting 3g adds in 10g toluene solution, with the rotating speed high-speed stirred 24h of 3000r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 12000cps; Adopted by the toluene solution of copolymer and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 200 μm, and the baking oven then putting into 65 DEG C toasts 48h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 4:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyethylene and polybutadiene of getting 3g adds in 30g alcoholic solution, with the rotating speed high-speed stirred 18h of 2500r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 15000cps; The alcoholic solution of copolymer is adopted and sprays coating method, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, layer of elastomer material coating thickness is for being 300 μm, adopt coating thickness measuring instrument to carry out scanning monitoring to the thickness of layer of elastomer material, obtain thickness data as shown in Figure 2.Then the baking oven putting into 70 DEG C toasts 72h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 5:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyethylene and polybutadiene of getting 3g adds in 30g alcoholic solution, with the rotating speed high-speed stirred 18h of 2500r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 15000cps; The alcoholic solution of copolymer is adopted roll-in transfer coated mode, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, layer of elastomer material coating thickness is 300 μm, adopt coating thickness measuring instrument to carry out scanning monitoring to the thickness of layer of elastomer material, obtain thickness data as shown in Figure 2.Then the baking oven putting into 70 DEG C toasts 72h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 6:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyisoprene and polybutadiene of getting 3g adds in 10g toluene solution, with the rotating speed high-speed stirred 24h of 3000r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 12000cps; Adopted by the toluene solution of copolymer and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 200 μm.Then the baking oven putting into 45 DEG C toasts 48h, and the layer of elastomer material surface of coating is not dry, then continues baking 24h, and layer of elastomer material surface is still not dry; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.Because battery core inside is containing the toluene solution of not drying, battery core degradation, capacity is on the low side.
embodiment 7:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyisoprene and polybutadiene of getting 3g adds in 10g toluene solution, with the rotating speed high-speed stirred 24h of 3000r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 12000cps; Adopted by the toluene solution of copolymer and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 200 μm, and the baking oven then putting into 50 DEG C toasts 48h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 8:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyisoprene and polybutadiene of getting 3g adds in 10g toluene solution, with the rotating speed high-speed stirred 24h of 3000r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 12000cps; Adopted by the toluene solution of copolymer and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 200 μm, and the baking oven then putting into 70 DEG C toasts 48h; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
embodiment 9:
The mode of winding or lamination is adopted to make naked battery core; The copolymer of the elastomeric material polyisoprene and polybutadiene of getting 3g adds in 10g toluene solution, with the rotating speed high-speed stirred 24h of 3000r/min, carries out ultrasonic disperse simultaneously, makes it to dissolve, and gained solution viscosity is 12000cps; Adopted by the toluene solution of copolymer and spray coating method, be coated in naked battery core outer surface, elastomeric material coated area is 90% of naked battery core exterior surface area, and layer of elastomer material coating thickness is 200 μm.Then the baking oven putting into 75 DEG C toasts 48h, and there is slight be full of cracks on the surface of layer of elastomer material, and layer of elastomer material adhesive force declines, and have slight obscission, there are the problem of appearance such as many sags and crests on battery core surface; Again naked battery core is carried out encapsulating, fluid injection, change into, the operation such as fixture baking and partial volume, make and obtain lithium ion battery.
In the lithium ion battery prepared from comparative example 1 and embodiment 1-9, respectively get 40pcs, carry out heavy impact respectively, safety test that the extruding of narrow limit, acupuncture, battery core are fallen, obtain concrete test result as table 1.As can be seen from result shown in table 1, contrast with original technology, adopt the lithium ion battery that the present invention makes, its security performance improves greatly, and the percent of pass in the safety test that heavy impact, the extruding of narrow limit, acupuncture, battery core are fallen is the highest can reach 100%.By the contrast of embodiment 4 and embodiment 5, spray coating method compared with roll-in transfer coated mode, spray that coating method obtains the thickness of layer of elastomer material more even, the percent of pass of the safety test that heavy impact, the extruding of narrow limit, acupuncture, battery core are fallen is also apparently higher than roll-in transfer coated mode.By the contrast of embodiment 3,6,7,8 and 9, find that bake out temperature is lower than 50 DEG C, elastomeric material is difficult to dry, and easily causes the be full of cracks of layer of elastomer material higher than 70 DEG C, the too high or too low performance that all can have a strong impact on battery of bake out temperature.
Claims (8)
1. a lithium battery electric core, is characterized in that, the outer surface of naked battery core is coated with the layer of elastomer material of one deck insulation.
2. a preparation method for lithium battery electric core, is characterized in that, comprises the following steps:
The elastomeric material of insulation is dissolved or dispersed in polar organic solvent, obtains elastomer solution;
Elastomer solution is coated in the outer surface of naked battery core, drying obtains the battery core that surface coverage has insulating elastomer material layer.
3. preparation method according to claim 2, is characterized in that, described coating method is injecting type coating.
4. preparation method according to claim 2, is characterized in that, drying mode is for drying, and bake out temperature is 50-70 DEG C.
5. preparation method according to claim 2, is characterized in that, the concentration of described elastomer solution elastomer is 10%-30%.
6. the preparation method according to any one of claim 2-5, is characterized in that, described elastomer solution coated area is the 50%-90% of naked battery core exterior surface area.
7. the preparation method according to any one of claim 2-5, is characterized in that, the thickness of described layer of elastomer material is 50-500 μm.
8. the preparation method according to any one of claim 2-5, is characterized in that, described elastomeric material is at least one in SIS, polyolefin, polystyrene, polyesters, polyamide, ethylene copolymer, polyisoprene, polybutadiene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408807.3A CN105047937A (en) | 2015-07-13 | 2015-07-13 | Lithium battery core and fabrication method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408807.3A CN105047937A (en) | 2015-07-13 | 2015-07-13 | Lithium battery core and fabrication method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105047937A true CN105047937A (en) | 2015-11-11 |
Family
ID=54454312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510408807.3A Pending CN105047937A (en) | 2015-07-13 | 2015-07-13 | Lithium battery core and fabrication method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105047937A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384846A (en) * | 2016-10-14 | 2017-02-08 | 四川赛尔雷新能源科技有限公司 | Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner |
| CN112349874A (en) * | 2019-08-08 | 2021-02-09 | 宁德时代新能源科技股份有限公司 | Positive pole piece and lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503853B1 (en) * | 1969-05-22 | 1975-02-12 | ||
| CN201311953Y (en) * | 2008-11-27 | 2009-09-16 | 比亚迪股份有限公司 | Lithium ion battery |
| CN102891334A (en) * | 2011-07-18 | 2013-01-23 | 比亚迪股份有限公司 | Lithium ion battery and preparation method thereof |
| EP2602841A1 (en) * | 2011-12-09 | 2013-06-12 | Samsung SDI Co., Ltd. | Battery |
-
2015
- 2015-07-13 CN CN201510408807.3A patent/CN105047937A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503853B1 (en) * | 1969-05-22 | 1975-02-12 | ||
| CN201311953Y (en) * | 2008-11-27 | 2009-09-16 | 比亚迪股份有限公司 | Lithium ion battery |
| CN102891334A (en) * | 2011-07-18 | 2013-01-23 | 比亚迪股份有限公司 | Lithium ion battery and preparation method thereof |
| EP2602841A1 (en) * | 2011-12-09 | 2013-06-12 | Samsung SDI Co., Ltd. | Battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384846A (en) * | 2016-10-14 | 2017-02-08 | 四川赛尔雷新能源科技有限公司 | Method for coating battery core of lithium battery with solid diaphragm adhesive in insulation manner |
| CN112349874A (en) * | 2019-08-08 | 2021-02-09 | 宁德时代新能源科技股份有限公司 | Positive pole piece and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11575114B2 (en) | Dual function current collector | |
| US10270073B2 (en) | Organic/inorganic composite coating porous separator and secondary battery element using same | |
| US9431643B2 (en) | Separator of lithium-ion-battery preparation and method thereof | |
| Yu et al. | A newly-developed heat-resistance polyimide microsphere coating to enhance the thermal stability of commercial polyolefin separators for advanced lithium-ion battery | |
| CN102171856B (en) | There is the barrier film of porous coating and the electrochemical appliance containing this barrier film | |
| CN101989651B (en) | Method for preparing cross-linked ceramic-coated separator containing ionic polymer, ceramic-coated separator prepared by the method, and lithium secondary battery using the same | |
| CN103493253B (en) | Barrier film, its manufacture method and there is the electrochemical device of this barrier film | |
| KR100791791B1 (en) | Electrode having porous active coating layer, and manufacturing method thereof and electrochemical device containing the same | |
| KR101708884B1 (en) | Method for manufacturing separator, separator manufactured by the method and method for manufacturing electrochemical device including the separator | |
| US20080311479A1 (en) | Electrode With Enhanced Safety and Electrochemical Device Having the Same | |
| EP2077594A1 (en) | Composite separator films for lithium-ion batteries | |
| WO2014077367A1 (en) | Collector, electrode structure body, and electrical storage component | |
| CN106519742A (en) | Anti-flaming ceramic modified size and lithium ion battery membrane coated with same | |
| CN102610773A (en) | Polymer lithium ion battery and diaphragm thereof | |
| CN105140450A (en) | Lithium ion battery composite separator, preparation method thereof, and lithium ion battery | |
| CN105304850A (en) | Mixed paint for composite membrane of lithium ion battery, composite membrane and preparation method thereof, and lithium ion battery | |
| CN103515564A (en) | Composite diaphragm and method for preparing same | |
| CN105161661A (en) | Composite diaphragm for lithium ion battery, preparation method of composite diaphragm, and lithium ion battery | |
| CN104140502A (en) | Binder for lithium ion battery diaphragm, preparation method and diaphragm using the same | |
| CN107482164A (en) | A kind of electrodes of lithium-ion batteries structure and lithium ion battery | |
| CN104466231A (en) | Lithium-ion secondary battery and preparation method of lithium-ion secondary battery | |
| CN104752660B (en) | A kind of battery diaphragm and preparation method thereof | |
| CN105047937A (en) | Lithium battery core and fabrication method thereof | |
| CN105449141A (en) | Preparation method of battery diaphragm and battery membrane | |
| CN112038546A (en) | Functional diaphragm of lithium-sulfur battery, preparation method and application thereof, and lithium-sulfur battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |