CN107611339A - A kind of positive plate of high power lithium ionic cell and preparation method thereof - Google Patents
A kind of positive plate of high power lithium ionic cell and preparation method thereof Download PDFInfo
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- CN107611339A CN107611339A CN201710821150.2A CN201710821150A CN107611339A CN 107611339 A CN107611339 A CN 107611339A CN 201710821150 A CN201710821150 A CN 201710821150A CN 107611339 A CN107611339 A CN 107611339A
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- carbon
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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
Abstract
The invention discloses a kind of positive plate of high power lithium ionic cell and preparation method thereof, there is one layer of coating mixed by nitrogen-doped carbon material and LiMn2O4 on collector, nitrogen-doped carbon material can effectively lift the electronic conductance and ionic conductance of inside battery, and LiMn2O4 is in itself due to being spinel structure, with stronger dynamic performance, and can continue to discharge certain lithium ion in charge and discharge process to alleviate capacitance loss and safety problem caused by some irreversible structure changes that ternary material occurs, while also improve cycle performance.The mixed coating that both materials are formed, by respective excellent properties, complements each other, effectively improves multiplying power, circulation and the security performance of ternary battery system.
Description
Technical field
The invention belongs to field of lithium ion battery, specifically, be related to a kind of positive plate of high power lithium ionic cell and its
Preparation method.
Background technology
With the continuous development of science and technology, and continuous attention of the people to environmental problem, the popularization of new-energy automobile is
Deploy in the range of countries in the world.The new-energy automobile of main flow is all largely to employ lithium ion battery to be used as supply power supply,
This, which does not require nothing more than lithium ion battery, has higher and higher energy density, also requires higher and higher charge-discharge magnification, follows
Ring life-span and higher security performance.
At present, the major way for lifting lithium ion battery energy density is exactly using tertiary cathode (NCM, NCA) collocation silicon
Carbon negative pole material, although this system energy density is high, because tertiary cathode material is layer structure, its charge-discharge magnification
Poor-performing, using weaker in terms of high power and quick charging battery.In addition, the security performance of tertiary cathode material is also than it
His material system is poor, and under the conditions of overcharging, easily producing polarization causes material structure that irreversible change and electrolyte occurs
Oxidation Decomposition, release substantial amounts of heat, cause inner pressure of battery, temperature rise, the hidden dangers such as blast, burning be present.Ternary
These defects of battery system hinder the development of new-energy automobile to a certain extent.In order to solve ternary lithium-ion battery system
These problems, people's generally use adds various additives to lift the safety of battery, rate charge-discharge in the electrolytic solution
Can, but improvement is limited.
In view of this it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is overcome the deficiencies in the prior art, there is provided a kind of high power lithium ion cell
Positive plate and preparation method thereof, there is one layer of coating mixed by nitrogen-doped carbon material and LiMn2O4, nitrogen-doped carbon on collector
Material can effectively lift the electronic conductance and ionic conductance of inside battery, and LiMn2O4 has in itself due to being spinel structure
There is stronger dynamic performance, and can continue to discharge certain lithium ion in charge and discharge process to alleviate because ternary material is sent out
Capacitance loss and safety problem caused by the irreversible structure change of some raw, while also improve cycle performance.
In order to solve the above technical problems, the present invention is using the basic conception of technical scheme：
A kind of positive plate of high power lithium ionic cell, positive plate is by coating, positive pole coating material group on the outside of collector, collector
Into, coating is coated on collector periphery on the outside of the collector, and the positive pole coating material is coated on coating periphery on the outside of collector,
The collector is aluminium foil, and coating is made up of adhesive, LiMn2O4, nitrogen-doped carbon material on the outside of the collector, the positive pole
Coating material includes adhesive, conductive agent, tertiary cathode material.
Further, the tertiary cathode material is nickle cobalt lithium manganate or nickel cobalt lithium aluminate, and also or LiMn2O4, cobalt are sour
One kind or any combination in lithium, LiFePO4.
Further, the base-material of the nitrogen-doped carbon material be microporous carbon, activated carbon, biological carbon, mesoporous carbon, mesoporous carbon,
Macropore carbon, mesoporous microporous carbon, macropore microporous carbon, macropore mesoporous carbon, the mesoporous microporous carbon of macropore, graphite, graphene, fibrous carbon, carbon
Black, CNT or acetylene black.
Further, described adhesive is Kynoar, polytetrafluoroethylene (PTFE), polyvinyl alcohol, sodium cellulose glycolate, fourth
Benzene rubber, gelatin, sodium alginate, LA132 or cyclodextrin.
Further, the conductive agent is acetylene black, Super P, carbon fiber, CNT, Ketjen black, graphite or graphite
Alkene.
A kind of preparation method of positive plate of high power lithium ionic cell described above, comprises the following steps：
Step S1, it is 1 by mass ratio:0.01~1:0.01~1 LiMn2O4, adhesive, nitrogen-doped carbon material are added to
Be stirred in dispersant it is scattered, obtain solid content be 50-80% slurry；
Step S2, the slurry obtained in step S1 is coated on the two sides of current collector aluminum foil, the coating thickness in each face
For 2-10um, the collector with LiMn2O4/carbon coating is obtained；
Step S3, anode sizing agent is prepared using tertiary cathode material, adhesive, conductive agent, anode sizing agent is coated in band
On the collector two sides of LiMn2O4/carbon coating, based lithium-ion battery positive plate is obtained after drying, roll-in.
Further, the N doping mode of the nitrogen-doped carbon material in the step S1 is atom doped, including pyridine nitrogen,
Pyrroles's nitrogen, graphite nitrogen, mass fraction of the nitrogen content in modified carbonaceous components are 0.01%~20%.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
Lithium ion anode piece provided by the invention, there is on collector one layer to be mixed by nitrogen-doped carbon material and LiMn2O4
Coating, nitrogen-doped carbon material can effectively lift the electronic conductance and ionic conductance of inside battery, and LiMn2O4 is in itself due to being
Spinel structure, there is stronger dynamic performance, and can continue to discharge certain lithium ion in charge and discharge process to delay
Solution capacitance loss and safety problem caused by some irreversible structure changes that ternary material occurs, while also improve circulation
Performance.The mixed coating that both materials are formed, by respective excellent properties, complements each other, effectively improves ternary battery
Multiplying power, circulation and the security performance of system.
The present invention is rational in infrastructure, practical, is advantageous to equipment promotion application.
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
A part of the accompanying drawing as the application, for providing further understanding of the invention, of the invention is schematic
Embodiment and its illustrate to be used to explain the present invention, but do not form inappropriate limitation of the present invention.Obviously, drawings in the following description
Only some embodiments, to those skilled in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the structural representation of positive plate of the present invention.
In figure：1- aluminium foils；Coating on the outside of 2- collectors；3- positive pole coating materials.
It should be noted that these accompanying drawings and word description are not intended as the design model limiting the invention in any way
Enclose, but be that those skilled in the art illustrate idea of the invention by reference to specific embodiment.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in embodiment is clearly and completely described, following examples be used for illustrate the present invention, but
It is not limited to the scope of the present invention.
As shown in figure 1, a kind of positive plate of high power lithium ionic cell, positive plate by coating 2 on the outside of collector, collector,
Positive pole coating material 3 forms, and coating is coated on collector periphery on the outside of the collector, and the positive pole coating material is coated on collector
Outside coating periphery, the collector are aluminium foil 1, and coating is by adhesive, LiMn2O4, nitrogen-doped carbon material on the outside of the collector
Composition, the positive pole coating material include adhesive, conductive agent, tertiary cathode material.
Embodiment 1
It is 20 by mass ratio：5：75 LiMn2O4, LA132, nitrogen-doped carbon nanometer pipe are added in a certain amount of water and stirred
Mix scattered, obtain the mixed slurry that solid content is 60%, then by the slurry coated in aluminum foil current collector, after drying, roll-in
Measure coating layer thickness.It is 96 to take mass ratio again：2：2 nickle cobalt lithium manganate, CNT, Kynoar are added to a certain amount of
Stirring is sized mixing in 1-METHYLPYRROLIDONE, is obtained the anode sizing agent that solid content is 55%, must be coated in outside by the slurry is uniform
On cated collector, required anode pole piece is obtained after drying, roll-in.
Embodiment 2
It is 5 by mass ratio：90：5 LiMn2O4, Na-alginate, nitrogen-doped graphene are added in a certain amount of water and stirred
Mix scattered, obtain the mixed slurry that solid content is 58%, then by the slurry coated in aluminum foil current collector, after drying, roll-in
Measure coating layer thickness.It is 97 to take mass ratio again：2：1 nickel cobalt lithium aluminate, Super P, Kynoar are added to a certain amount of
Stirring is sized mixing in 1-METHYLPYRROLIDONE, is obtained the anode sizing agent that solid content is 58%, must be coated in outside by the slurry is uniform
On cated collector, required anode pole piece is obtained after drying, roll-in.
Embodiment 3
It is 35 by mass ratio：40：25 LiMn2O4, gelatin, N doping Delanium are added in a certain amount of water and stirred
Mix scattered, obtain the mixed slurry that solid content is 55%, then by the slurry coated in aluminum foil current collector, after drying, roll-in
Measure coating layer thickness.It is 95 to take mass ratio again：3：2 nickle cobalt lithium manganate/LiMn2O4 compound, Super P, carboxymethyl cellulose
Sodium is added to be stirred in a certain amount of water and sized mixing, and obtains the anode sizing agent that solid content is 60%, must apply the slurry is uniform
Overlay on the cated collector in outside, required anode pole piece is obtained after drying, roll-in.
Embodiment 4
It is 80 by mass ratio：10：10 LiMn2O4, cyclodextrin, N doping native graphite are added in a certain amount of water and carried out
It is dispersed with stirring, obtains the mixed slurry that solid content is 50%, then dries the slurry, roll-in coated in aluminum foil current collector
After measure coating layer thickness.It is 93 to take mass ratio again：4：3 nickle cobalt lithium manganate/LiMn2O4 compound, Super P, polyvinyl alcohol add
Enter into a certain amount of water to be stirred and size mixing, obtain the anode sizing agent that solid content is 52%, must be coated in the slurry is uniform
On the cated collector in outside, required anode pole piece is obtained after drying, roll-in.
Described above is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within the present invention program.
Claims (7)
- A kind of 1. positive plate of high power lithium ionic cell, it is characterised in that positive plate by coating on the outside of collector, collector, just Pole coating material forms, and coating is coated on collector periphery on the outside of the collector, and the positive pole coating material is coated on outside collector Side coating periphery, the collector are aluminium foil, and coating includes first adhesive, LiMn2O4, nitrogen-doped carbon on the outside of the collector Material, the positive pole coating material include second adhesive, conductive agent, tertiary cathode material.
- A kind of 2. positive plate of high power lithium ionic cell according to claim 1, it is characterised in that the tertiary cathode material Expect for nickle cobalt lithium manganate or nickel cobalt lithium aluminate, also or one kind or any combination in LiMn2O4, cobalt acid lithium, LiFePO4.
- A kind of 3. positive plate of high power lithium ionic cell according to claim 1, it is characterised in that the N doping carbon materials The base-material of material is microporous carbon, activated carbon, biological carbon, mesoporous carbon, mesoporous carbon, macropore carbon, mesoporous microporous carbon, macropore microporous carbon, big The mesoporous microporous carbon of hole mesoporous carbon, macropore, graphite, graphene, fibrous carbon, carbon black, CNT or acetylene black.
- A kind of 4. positive plate of high power lithium ionic cell according to claim 1, it is characterised in that the first adhesive It is Kynoar, polytetrafluoroethylene (PTFE), polyvinyl alcohol, sodium cellulose glycolate, butadiene-styrene rubber, gelatin, sea with second adhesive Mosanom, LA132 or cyclodextrin.
- 5. a kind of positive plate of high power lithium ionic cell according to claim 1, it is characterised in that the conductive agent is second Acetylene black, Super P, carbon fiber, CNT, Ketjen black, graphite or graphene.
- A kind of 6. preparation method of positive plate of high power lithium ionic cell as described in claim 1-5 is any, it is characterised in that Comprise the following steps：Step S1, it is 1 by mass ratio:0.01~1:0.01~1 LiMn2O4, adhesive, nitrogen-doped carbon material are added to scattered Be stirred in agent it is scattered, obtain solid content be 50-80% slurry；Step S2, by two sides of the slurry obtained in step S1 coated on current collector aluminum foil, the coating thickness in each face is 2- 10um, obtain the collector with LiMn2O4/carbon coating；Step S3, anode sizing agent is prepared using tertiary cathode material, adhesive, conductive agent, anode sizing agent is coated in band mangaic acid On the collector two sides of lithium/carbon coating, based lithium-ion battery positive plate is obtained after drying, roll-in.
- 7. the preparation method of a kind of positive plate of high power lithium ionic cell according to claim 6, it is characterised in that described The N doping mode of nitrogen-doped carbon material in step S1 is atom doped, including pyridine nitrogen, pyrroles's nitrogen, graphite nitrogen, nitrogen content Mass fraction in modified carbonaceous components is 0.01%~20%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317201A (en) * | 2018-08-23 | 2019-02-12 | 南京理工大学 | Cyclodextrin modified organic aryne nanobelt functionalization nitrogen-doped graphene electrochemical sensing material and preparation method thereof |
| CN109449372A (en) * | 2018-11-01 | 2019-03-08 | 贵州梅岭电源有限公司 | A kind of preparation method and applications of lithium-thionyl chloride porous anode |
| CN110611076A (en) * | 2019-08-02 | 2019-12-24 | 河南平煤国能锂电有限公司 | Lithium ion battery positive pole piece and preparation method thereof |
| CN113013493A (en) * | 2019-12-19 | 2021-06-22 | 万华化学集团股份有限公司 | Quick-charging lithium ion battery and preparation method thereof |
| CN113422000A (en) * | 2021-06-21 | 2021-09-21 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN115084526A (en) * | 2022-07-08 | 2022-09-20 | 珠海冠宇电池股份有限公司 | Positive plate and battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633291A (en) * | 2012-08-23 | 2014-03-12 | 万向电动汽车有限公司 | Lithium ion battery positive pole piece and manufacturing method thereof |
| CN105870384A (en) * | 2016-03-03 | 2016-08-17 | 中国石油大学(华东) | Nitrogen-doped carbon nanotube/manganese-cobalt oxide nano composite material for lithium battery electrodes |
| CN107142487A (en) * | 2017-04-06 | 2017-09-08 | 天津大学 | A kind of electrochemical preparation method of nitrogen-doped carbon material |
-
2017
- 2017-09-13 CN CN201710821150.2A patent/CN107611339A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633291A (en) * | 2012-08-23 | 2014-03-12 | 万向电动汽车有限公司 | Lithium ion battery positive pole piece and manufacturing method thereof |
| CN105870384A (en) * | 2016-03-03 | 2016-08-17 | 中国石油大学(华东) | Nitrogen-doped carbon nanotube/manganese-cobalt oxide nano composite material for lithium battery electrodes |
| CN107142487A (en) * | 2017-04-06 | 2017-09-08 | 天津大学 | A kind of electrochemical preparation method of nitrogen-doped carbon material |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317201A (en) * | 2018-08-23 | 2019-02-12 | 南京理工大学 | Cyclodextrin modified organic aryne nanobelt functionalization nitrogen-doped graphene electrochemical sensing material and preparation method thereof |
| CN109449372A (en) * | 2018-11-01 | 2019-03-08 | 贵州梅岭电源有限公司 | A kind of preparation method and applications of lithium-thionyl chloride porous anode |
| CN109449372B (en) * | 2018-11-01 | 2020-07-14 | 贵州梅岭电源有限公司 | Preparation method and application of lithium thionyl chloride porous anode |
| CN110611076A (en) * | 2019-08-02 | 2019-12-24 | 河南平煤国能锂电有限公司 | Lithium ion battery positive pole piece and preparation method thereof |
| CN113013493A (en) * | 2019-12-19 | 2021-06-22 | 万华化学集团股份有限公司 | Quick-charging lithium ion battery and preparation method thereof |
| CN113013493B (en) * | 2019-12-19 | 2023-01-13 | 万华化学集团股份有限公司 | Quick-charging lithium ion battery and preparation method thereof |
| CN113422000A (en) * | 2021-06-21 | 2021-09-21 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN113422000B (en) * | 2021-06-21 | 2023-02-21 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN115084526A (en) * | 2022-07-08 | 2022-09-20 | 珠海冠宇电池股份有限公司 | Positive plate and battery |
| CN115084526B (en) * | 2022-07-08 | 2024-02-20 | 珠海冠宇电池股份有限公司 | Positive electrode sheet and battery |
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Effective date of registration: 20200522 Address after: Room g0232, headquarters building, Changsha Zhongdian Software Park, No. 39, Jianshan Road, high tech Development Zone, Changsha City, Hunan Province Applicant after: Thornton New Energy Technology (Changsha) Co.,Ltd. Address before: 411100 Hunan province Xiangtan City Jiuhua Demonstration Zone No. 78 West Benz Applicant before: SOUNDON NEW ENERGY TECHNOLOGY Co.,Ltd. |
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