CN205050928U - Lithium ion battery pole piece coating structure - Google Patents
Lithium ion battery pole piece coating structure Download PDFInfo
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- CN205050928U CN205050928U CN201520807008.9U CN201520807008U CN205050928U CN 205050928 U CN205050928 U CN 205050928U CN 201520807008 U CN201520807008 U CN 201520807008U CN 205050928 U CN205050928 U CN 205050928U
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- lithium ion
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- 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
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Abstract
The utility model relates to a lithium ion battery pole piece coating structure, a serial communication port, structure package foil (1), graphite alkene coating (2), active material coating (3), aluminium oxide coating (4). The cohesion between foil (1) and active material coating (3) has been improved simultaneously to the effectual electric conductivity that improves battery sheet of graphite alkene coating (2). Aluminium oxide coating (4) have the security that better temperature resistant and endurable thorn ability have improved the battery, and porous structure has better absorption electrolyte ability, improve the battery circulation and reduce battery self discharge rate.
Description
Technical field
The utility model relates to field of lithium ion battery, particularly relates to a kind of electrodes of lithium-ion batteries coated structure.
Background technology
Lithium ion battery is widely used in the fields such as communication, illumination, energy storage, electric motor car, electric bicycle, electric tool.Along with the expansion in lithium ion battery applications field, to the fail safe of lithium ion battery and the requirement of electrical property more and more higher.The fail safe of current lithium ion battery, is mainly reflected in over-charging of battery, acupuncture, extruding aspect.Nickel-cobalt-manganese ternary is poor relative to the fail safe of ferric phosphate lithium cell.The electrical property of lithium ion battery is mainly reflected on internal resistance, circulation and self-discharge characteristics.Self discharge consistency is still poor, all exists from 1% ~ 10% with the moon self discharge in a collection of battery.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of electrodes of lithium-ion batteries coated structure, and the fail safe of raising over-charging of battery, acupuncture, extruding aspect improves the self-discharge characteristics of battery simultaneously.
For solving the problem, the utility model adopts following technical scheme:
A kind of electrodes of lithium-ion batteries coated structure, it is characterized in that, intermediate layer is foil, and foil outer application has Graphene coating, and Graphene coating outer application has coating layer of active substance, and coating layer of active substance (3) skin is coated with aluminum oxide coating layer.
Described foil is Copper Foil or aluminium foil.
Described coating layer of active substance is the one in graphite material coating or nickel-cobalt-manganese ternary coating,
Described aluminum oxide coating layer surface band is porose, and coating layer thickness is 3 ~ 6 μm.
Described Graphene coating layer thickness is 2 ~ 4 microns.
Advantageous Effects of the present utility model is:
1) Graphene coating effectively raises the conductivity of battery pole piece, improves the adhesion between foil and coating layer of active substance simultaneously.
2) aluminum oxide coating layer has the fail safe that good heatproof and puncture-resistant ability improve battery, and loose structure has good Electolyte-absorptive ability, improves circulating battery and reduces battery self discharge rate.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In accompanying drawing: 1, bag foil; 2, Graphene coating; 3, coating layer of active substance; 4, aluminum oxide coating layer.
Embodiment
As shown in Figure 1, foil 1 is aluminium foil; Graphene coating 2 thickness is 2 ~ 4 μm, and coating layer of active substance 3 is nickel-cobalt-manganese ternary material; Aluminium oxide layer 4 thickness is 3 ~ 6 μm.
Realize this coating structure processing step as follows:
1, first aluminium foil 1 surface is carried out to the coating of Graphene coating 2, short-term baking temperature is 50 ~ 60 DEG C;
2, carry out nickel-cobalt-manganese ternary Material coating after Graphene coating 2 drying, dry under the environment of 100 ~ 110 DEG C;
3, nickel-cobalt-manganese ternary Material coating complete and dry after, carry out roll-in.
4, the pole piece after roll-in carries out covering aluminum oxide coating 4, and dry under the environment of 60 ~ 70 DEG C.Complete the coating of pole piece after drying terminates, proceed the making of battery.
Under this technique, prepare electric ternary material battery, overcharge test, monomer lancing test and extruding by 3C10V are tested.The moon self-discharge performance of battery batch controls within 5%, the circulation volume conservation rate > 95% in 1C1000 week.There is good cycle performance and batch self discharge consistency.
Claims (4)
1. an electrodes of lithium-ion batteries coated structure, it is characterized in that, intermediate layer is foil (1), foil (1) outer application has Graphene coating (2), Graphene coating (2) outer application has coating layer of active substance (3), and coating layer of active substance (3) skin is coated with aluminum oxide coating layer (4).
2. according to electrodes of lithium-ion batteries coated structure a kind of described in claim 1, it is characterized in that, described foil (1) is Copper Foil or aluminium foil.
3. according to electrodes of lithium-ion batteries coated structure a kind of described in claim 1, it is characterized in that, described coating layer of active substance (3) is the one in graphite material coating or nickel-cobalt-manganese ternary coating.
4. according to electrodes of lithium-ion batteries coated structure a kind of described in claim 1, it is characterized in that, described aluminum oxide coating layer (4) surface band is porose, and coating layer thickness is 3 ~ 6 μm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201520807008.9U CN205050928U (en) | 2015-10-19 | 2015-10-19 | Lithium ion battery pole piece coating structure |
Applications Claiming Priority (1)
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CN201520807008.9U CN205050928U (en) | 2015-10-19 | 2015-10-19 | Lithium ion battery pole piece coating structure |
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CN205050928U true CN205050928U (en) | 2016-02-24 |
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CN201520807008.9U Active CN205050928U (en) | 2015-10-19 | 2015-10-19 | Lithium ion battery pole piece coating structure |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106784621A (en) * | 2016-12-23 | 2017-05-31 | 惠州拓邦电气技术有限公司 | Electrodes of lithium-ion batteries and preparation method thereof, lithium ion battery |
CN114695838A (en) * | 2022-03-28 | 2022-07-01 | 天能电池集团股份有限公司 | Lithium battery positive pole piece, preparation method thereof and lithium battery adopting positive pole piece |
CN114725319A (en) * | 2022-04-29 | 2022-07-08 | 深圳市德方纳米科技股份有限公司 | Positive electrode, positive electrode slurry, preparation method and lithium ion battery |
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2015
- 2015-10-19 CN CN201520807008.9U patent/CN205050928U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106784621A (en) * | 2016-12-23 | 2017-05-31 | 惠州拓邦电气技术有限公司 | Electrodes of lithium-ion batteries and preparation method thereof, lithium ion battery |
CN114695838A (en) * | 2022-03-28 | 2022-07-01 | 天能电池集团股份有限公司 | Lithium battery positive pole piece, preparation method thereof and lithium battery adopting positive pole piece |
CN114695838B (en) * | 2022-03-28 | 2024-04-12 | 天能电池集团股份有限公司 | Positive electrode plate of lithium battery, preparation method of positive electrode plate and lithium battery adopting positive electrode plate |
CN114725319A (en) * | 2022-04-29 | 2022-07-08 | 深圳市德方纳米科技股份有限公司 | Positive electrode, positive electrode slurry, preparation method and lithium ion battery |
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Address after: 277800 No. x6699, Guangming Road, high tech Zone, Zaozhuang City, Shandong Province (north of the junction of Guangming Road and Huaxin Road) Patentee after: Shandong Jinggong Electronic Technology Co.,Ltd. Address before: 277800 Haite Electronics Group, Fuyuan 5th Road, Thailand Industrial Park, High tech Zone, Zaozhuang City, Shandong Province Patentee before: Shandong Seiko Electronic Technology Co.,Ltd. |