Title:
POWER-TYPE NICKEL COBALT LITHIUM MANGANESE OXIDE MATERIAL, AND PREPARATION METHOD THEREFOR AND USES THEREOF
Document Type and Number:
WIPO Patent Application WO/2015/131850
Kind Code:
A1
Abstract:
The present invention relates to the technical field of preparation of a nickel cobalt lithium manganese oxide positive electrode material. Disclosed are a power-type nickel cobalt lithium manganese oxide material and a preparation method therefor and uses thereof. The preparation method comprises: adding an organic acid into a mixed aqueous solution of a lithium source, a nickel source, a cobalt source and a manganese source, aging, obtaining a sol precursor, obtaining a gel fiber through electrospinning, and obtaining the power-type nickel cobalt lithium manganese oxide material after calcination. In the present invention, the nickel cobalt lithium manganese oxide material of a nano-fiber structure is prepared by using a sol-gel electrospinning method, and the nickel cobalt lithium manganese oxide material of a nano-fiber structure has a uniform structure size, thereby effectively reducing surface energy, and improving a capacity of lithium ions. In addition, the nano-fiber structure can reduce impedance of lithium ion diffusion in an intercalation and deintercalation process, thereby enabling the lithium ions to diffuse fast. Meanwhile, the material has a larger surface area and more reaction active sites, and can provide a higher specific capacity. The method of the present invention has a simple process, can implement the electrospinning without adding a polymeric reagent, reduce cost of using a polymer, and reduce the impact of the polymer on a nano-structure.
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Inventors:
OU YANNAN (CN)
YU HAIJUN (CN)
LI CHANGDONG (CN)
YU HAIJUN (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2015/073773
Publication Date:
September 11, 2015
Filing Date:
March 06, 2015
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP END OF LIFE VEHICLES RECYCLING CO LTD (CN)
HUNAN BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP END OF LIFE VEHICLES RECYCLING CO LTD (CN)
International Classes:
H01M4/525; H01M4/505
Foreign References:
| CN103280574A | 2013-09-04 | |||
| CN102306774A | 2012-01-04 | |||
| CN103296270A | 2013-09-11 | |||
| CN103811747A | 2014-05-21 |
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
广州市华学知识产权代理有限公司 (CN)
广州市华学知识产权代理有限公司 (CN)
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