Title:
A lithium ion battery cathode additive agent, a manufacturing method for the same, a lithium ion battery cathode sheet, and a lithium ion battery
Document Type and Number:
Japanese Patent JP5944049
Kind Code:
B2
Abstract:
A lithium ion battery cathode additive includes a core-shell coating structure formed by elemental lithium powder and a polymer coated on the surface of the elemental lithium powder, where the polymer can dissolve in a carbonic ester solvent, the polymer cannot react with N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-2-methyl pyrrolidone (NMP), tetrahydrofuran (THF), acetone or methanol, and the polymer exists stably at a temperature of 0-150° C. The lithium ion battery cathode additive may be added in a lithium ion battery cathode material as a lithium source, for compensating lithium consumption of a battery cathode in a first-time charge-discharge process. Embodiments of the present invention further provide a fabrication method of the lithium ion battery cathode additive, a lithium ion battery cathode sheet and a lithium ion battery that include the lithium ion battery cathode additive, where the lithium ion battery has high energy density and a long cycle life.
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Inventors:
Zhang
Application Number:
JP2015524606A
Publication Date:
July 05, 2016
Filing Date:
March 29, 2013
Export Citation:
Assignee:
HUAWEI TECHNOLOGIES CO.,LTD.
International Classes:
H01M4/62; H01M4/13; H01M10/052; H01M10/0566
Domestic Patent References:
| JP2010538424A | ||||
| JP2011506254A | ||||
| JP2003303588A | ||||
| JP2007042285A | ||||
| JP2009152037A | ||||
| JP2012164624A | ||||
| JP2002260661A |
Foreign References:
| US20130026023 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki