CN104282956A - Method for mixing slurry in electrode preparation process of lithium ion battery or super-capacitor - Google Patents
Method for mixing slurry in electrode preparation process of lithium ion battery or super-capacitor Download PDFInfo
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- CN104282956A CN104282956A CN201410507711.8A CN201410507711A CN104282956A CN 104282956 A CN104282956 A CN 104282956A CN 201410507711 A CN201410507711 A CN 201410507711A CN 104282956 A CN104282956 A CN 104282956A
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- surfactant
- active material
- mixed
- making method
- stearate
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 15
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000003990 capacitor Substances 0.000 title claims abstract description 9
- 238000002156 mixing Methods 0.000 title claims abstract description 8
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002002 slurry Substances 0.000 title abstract description 4
- 239000011149 active material Substances 0.000 claims abstract description 30
- 239000004094 surface-active agent Substances 0.000 claims abstract description 28
- 239000006258 conductive agent Substances 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000011268 mixed slurry Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004108 freeze drying Methods 0.000 claims description 2
- 239000012456 homogeneous solution Substances 0.000 claims description 2
- 239000010954 inorganic particle Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- -1 polyoxyethylene glyceryl borate oleic acid Polymers 0.000 claims 6
- 239000002202 Polyethylene glycol Substances 0.000 claims 4
- 229920001223 polyethylene glycol Polymers 0.000 claims 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims 3
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 claims 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 2
- 150000002148 esters Chemical class 0.000 claims 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 2
- 229930182478 glucoside Natural products 0.000 claims 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims 2
- HOVAGTYPODGVJG-UVSYOFPXSA-N (3s,5r)-2-(hydroxymethyl)-6-methoxyoxane-3,4,5-triol Chemical compound COC1OC(CO)[C@@H](O)C(O)[C@H]1O HOVAGTYPODGVJG-UVSYOFPXSA-N 0.000 claims 1
- 235000021355 Stearic acid Nutrition 0.000 claims 1
- SZYSLWCAWVWFLT-UTGHZIEOSA-N [(2s,3s,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)-2-[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxolan-2-yl]methyl octadecanoate Chemical compound O([C@@H]1[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O1)O)[C@]1(COC(=O)CCCCCCCCCCCCCCCCC)O[C@H](CO)[C@@H](O)[C@@H]1O SZYSLWCAWVWFLT-UTGHZIEOSA-N 0.000 claims 1
- 238000012512 characterization method Methods 0.000 claims 1
- 235000014113 dietary fatty acids Nutrition 0.000 claims 1
- 239000003995 emulsifying agent Substances 0.000 claims 1
- 229930195729 fatty acid Natural products 0.000 claims 1
- 239000000194 fatty acid Substances 0.000 claims 1
- 150000008131 glucosides Chemical class 0.000 claims 1
- 235000011187 glycerol Nutrition 0.000 claims 1
- 229940100242 glycol stearate Drugs 0.000 claims 1
- WUKXMJCZWYUIRZ-UHFFFAOYSA-N hexadecyl 2-hydroxypropanoate Chemical compound CCCCCCCCCCCCCCCCOC(=O)C(C)O WUKXMJCZWYUIRZ-UHFFFAOYSA-N 0.000 claims 1
- HOVAGTYPODGVJG-UHFFFAOYSA-N methyl beta-galactoside Natural products COC1OC(CO)C(O)C(O)C1O HOVAGTYPODGVJG-UHFFFAOYSA-N 0.000 claims 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims 1
- 229940049964 oleate Drugs 0.000 claims 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims 1
- 229920005862 polyol Polymers 0.000 claims 1
- 229920000136 polysorbate Polymers 0.000 claims 1
- 239000008117 stearic acid Substances 0.000 claims 1
- 150000005846 sugar alcohols Polymers 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 3
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000009955 starching Methods 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
- 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
- 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
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- 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
- 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
-
- 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)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to a method for mixing slurry in the electrode preparation process of a lithium ion battery or a super-capacitor. On the basis of a conventional process, an active material is coated by a surfactant, and then the active material coated by the surfactant is mixed with additives such as an adhesive and a conductive agent in a solvent according to the conventional process. By virtue of the method, the adhesion of the adhesive can be improved, the consumption of the adhesive and the conductive agent can be reduced, the electrical conductivity of electrodes can be improved, and the cost of raw materials for producing the lithium ion battery and the super-capacitor can be further reduced.
Description
Technical field
The present invention relates to lithium ion battery and ultracapacitor production technology field, be specifically related to the mixed paste-making method in a kind of lithium ion battery and super-capacitor pole piece preparation process.
Background technology
In numerous energy storage technologies, lithium ion battery, owing to having the advantages such as lightweight, volume is little, operating voltage is high, energy density is high, power output is large, is widely applied in fields such as mobile phone, notebook computer and electric vehicles.Ultracapacitor has higher energy density, power density and cycle life, it is a kind of chemical power source had a extensive future, belong to emerging power back-off and energy storage device category, cause the extensive concern of people, and successful Application is in fields such as consumable electronic product, energy traffic, power back-offs, its market scale is just at rapid expansion.
In lithium ion cell electrode and electrode of super capacitor preparation process, active material needs to be coated on collection liquid surface after mixed slurry, after namely active material etc. are distributed to Polymer Solution or high molecular dispersion liquid, is coated on collection liquid surface.Because active material itself does not possess caking property, so need to add binding agent, by reactive substance adheres on a current collector.But binding agent is non-conductive material, reduces the conductivity of electrode to a great extent, in order to reduce the impedance that binding agent brings, being under normal circumstances after dissolving binding agent, adding conductive agent and strengthen conductivity.But, the additive such as binding agent and conductive materials add the proportion reducing active material, and then reduce mass energy density or even the volume energy density of electrode material, and indirectly improve industrial cost of manufacture.
Summary of the invention
The object of the present invention is to provide a kind of lithium ion battery and ultracapacitor to mix improving one's methods of sizing process, the consumption of binding agent and conductive agent can be reduced, improve caking property between active material and collector
The object of the present invention is achieved like this: first surfactant dissolves, form the solution of surfactant, then mix with surfactant through active material, form mixed slurry, drying subsequently, obtain the active material being coated with surfactant, finally mix with binding agent and conductive agent in a solvent after starching and be coated with.
The concrete technical scheme of the present invention is the mixed paste-making method in a kind of lithium ion battery or electrode of super capacitor preparation process, it is characterized in that specifically comprising the following steps:
1) surfactant dissolves, in water or in organic solvent, is stirred and obtains homogeneous solution;
2) active material is joined in the solution that step 1) stirs, then mix in mixing arrangement, obtain the mixed slurry of active material and surfactant;
3) to step 2) described in mixed slurry drying process, obtain the active material that surfactant is coated.
4) active material of clad surface activating agent after the drying described in step 3) is mixed in a solvent with binding agent and conductive agent pull an oar, be coated with.
The mass fraction of the surfactant described in step 1) is 0.2 ~ 2%.
The mass fraction of the surfactant described in step 1) is 0.01 ~ 10% of active material quality.
Step 2) mass ratio of described surfactant and active material is 1:10000 ~ 1:10.
Step 2) described in by active material and surfactant in the liquid phase mixed process realized by the equipment mixing inorganic particle, organic powder and liquid and body of paste.
Described in step 3), mixed slurry drying is comprised freeze drying or heat drying, cryodesiccated temperature is not less than-55 DEG C, and the temperature of heat drying is not higher than 185 DEG C.
The invention has the beneficial effects as follows by carrying out process modification to lithium ion battery and ultracapacitor active material clad surface activating agent, with this improve binding agent caking property, reduce the consumption of binding agent and conductive agent, improve the conductivity of electrode, and then reduce the cost of material of lithium ion battery and electrode of super capacitor.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is lithium-ion battery lithium iron phosphate anode pole piece comparison diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details, but does not therefore limit to the present invention.
The raw material that embodiment and comparative example are implemented is lithium ion battery anode material lithium iron phosphate, and lithium iron phosphate particles domain size distribution is at 100 ~ 150nm.
Embodiment: first 6g surfactant Tween40 is dissolved in 1.4kg deionized water, solution is stirred 10min under machinery stirs blender, rotating speed is 1000r/min.Then surfactant solution is added in colloid mill, then adds 750g LiFePO4, glue mill 90min.Mixed slurry is put into baking oven, 100 DEG C of freeze-day with constant temperature 12h.The PVDF of drying in advance is added in charging basket, adds solvent NMP, stir 2h, add SP conductive agent, stir 3h, add the LiFePO4 after oven dry, continue to stir 3h, after sieving, slurry is coated on aluminium foil surface.Be negative pole with graphite, be assembled into flexible-packed battery and carry out electrochemical property test.
Comparative example: in order to contrast with embodiment, LiFePO4 raw material is directly added without surfactant mixing and carries out mixed slurry process, the PVDF being about to dry in advance adds in charging basket, add solvent NMP, stir 2h, add SP conductive agent, stir 3h, adding the LiFePO4 without mixing with surfactant, continuing to stir 3h, after sieving, slurry being coated on aluminium foil surface.Be that negative pole is assembled into flexible-packed battery and carries out electrochemical property test with graphite.
From above-described embodiment and comparative example relatively, at identical conditions, the pole piece prepared by the mixed sizing process improved, is coated in aluminium foil surface, as shown in Figure 2 positive electrode uniform ground.By contrast, there is serious obscission in pole piece prepared by common process, illustrates that improving technique improves the caking property between active material, between active material and collector.By carrying out internal resistance, discharge and recharge and cycle performance test to the flexible-packed battery be assembled into, concrete Data Comparison is as shown in table 1 below.
The chemical property of table 1 embodiment and comparative example compares
| Sample | Embodiment | Comparative example |
| Internal resistance/m Ω | 92 | 661 |
| 1C first discharge specific capacity/mAhg -1 | 129 | 75 |
| Circulate capability retention after 100 times | 93% | 45% |
Shown in upper table 1, without the battery that the pole piece prepared of mixed paste-making method improved is assembled into, the battery that its internal resistance is prepared apparently higher than the method after improvement, reason is under the condition of identical consumption of binder, the bad adhesion of active material and pole piece, the impedance of electronics between collector and active material increases.In addition, the battery that after improving one's methods, the pole piece of preparation is assembled into all significantly is better than the method do not improved on specific discharge capacity and cycle performance.
The advantage that the present invention has is the caking property that improve between active material, between active material and collector, in other words, can save the consumption of binding agent and conductive agent, improves the conductivity of electrode and reduce cost of material.
Claims (7)
1. the mixed paste-making method in lithium ion battery or electrode of super capacitor preparation process, is characterized in that specifically comprising the following steps:
1) surfactant dissolves, in water or in organic solvent, is stirred and obtains homogeneous solution;
2) active material is joined in the solution that step 1) stirs, then mix in mixing arrangement, obtain the mixed slurry of active material and surfactant;
3) to step 2) described in mixed slurry drying process, obtain the active material that surfactant is coated;
4) active material of clad surface activating agent after the drying described in step 3) is mixed in a solvent with binding agent and conductive agent pull an oar, be coated with.
2. mixed paste-making method according to claim 1, it is characterized in that the surfactant described in step 1) is non-ionic surface active agent, comprise Emulsifier LM-102, hexadecanol lactate, polyethylene glycol mono stearate, polyoxyethylene glyceryl borate oleic acid ester, polyoxyethylene glycerol borate stearate, propylene glycol glucoside stearate, methyl glucoside stearate, ethylene glycol glucosides stearic acid ester, class of department class surfactant, Tweens surfactant, glycerin polyoxyethylene oleic acid ester, polyol fatty acid ester, polyalcohol oleate, sucrose stearate, polyethylene glycol stearate diester, one or more in polyethylene glycol mono stearate and polyethylene glycol bilaurate.
3. mixed paste-making method according to claim 2, is characterized in that the mass fraction of the surfactant described in step 1) is 0.2 ~ 2%.
4. mixed paste-making method according to claim 2, is characterized in that the mass fraction of the surfactant described in step 1) is 0.01 ~ 10% of active material quality.
5. mixed paste-making method according to claim 2, its characterization step 2) mass ratio of described surfactant and active material is 1:10000 ~ 1:10.
6. mixed paste-making method according to claim 1, is characterized in that step 2) described in by active material and surfactant in the liquid phase mixed process realized by the equipment mixing inorganic particle, organic powder and liquid and body of paste.
7. mixed paste-making method according to claim 1, it is characterized in that, described in step 3) step 3), mixed slurry drying is comprised freeze drying or heat drying, cryodesiccated temperature is not less than-55 DEG C, and the temperature of heat drying is not higher than 185 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507711.8A CN104282956A (en) | 2014-09-28 | 2014-09-28 | Method for mixing slurry in electrode preparation process of lithium ion battery or super-capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507711.8A CN104282956A (en) | 2014-09-28 | 2014-09-28 | Method for mixing slurry in electrode preparation process of lithium ion battery or super-capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104282956A true CN104282956A (en) | 2015-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410507711.8A Pending CN104282956A (en) | 2014-09-28 | 2014-09-28 | Method for mixing slurry in electrode preparation process of lithium ion battery or super-capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104282956A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021415A (en) * | 2006-07-10 | 2008-01-31 | Nissan Motor Co Ltd | Electrode for non-aqueous electrolyte secondary battery |
| CN104025350A (en) * | 2011-12-26 | 2014-09-03 | 太阳控股株式会社 | Positive-electrode mixture, positive electrode, and non-aqueous electrolyte secondary battery using same |
-
2014
- 2014-09-28 CN CN201410507711.8A patent/CN104282956A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021415A (en) * | 2006-07-10 | 2008-01-31 | Nissan Motor Co Ltd | Electrode for non-aqueous electrolyte secondary battery |
| CN104025350A (en) * | 2011-12-26 | 2014-09-03 | 太阳控股株式会社 | Positive-electrode mixture, positive electrode, and non-aqueous electrolyte secondary battery using same |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150114 |
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