Title:
LITHIUM ION BATTERY AND ELECTROLYTE THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/214313
Kind Code:
A1
Abstract:
A lithium ion battery and an electrolyte thereof. The electrolyte comprises an organic solvent, a lithium salt, and an additive; the additive comprises: additive A: a fluorocyclic carbonate compound; additive B: a cyclophosphazene compound; and additive C: a cyclic sulphate compound; the general structural formula of the additive B, i.e., the cyclophosphazene compound is (I). Compared with the prior art, the electrolyte can form stable CEI and SEI films on the surfaces of a cathode and an anode to protect the cathode and anode interfaces, thus improving acidic environment of the electrolyte of the lithium ion battery, alleviating damage of HF to the cathode and anode interfaces, reducing the low temperature resistance of the lithium ion battery, and significantly improving the cycle performance, high-temperature storage performance, and safety performance of the lithium ion battery.
Inventors:
LIU JIQIONG (CN)
HAN CHANGLONG (CN)
WANG XIAOMEI (CN)
ZHU JIANWEI (CN)
ZHOU YAN (CN)
HUAN FENG (CN)
YU KUN (CN)
HAN CHANGLONG (CN)
WANG XIAOMEI (CN)
ZHU JIANWEI (CN)
ZHOU YAN (CN)
HUAN FENG (CN)
YU KUN (CN)
Application Number:
PCT/CN2017/098807
Publication Date:
November 29, 2018
Filing Date:
August 24, 2017
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/0567; H01M10/0525
Foreign References:
| CN106058316A | 2016-10-26 | |||
| CN105098236A | 2015-11-25 | |||
| CN103762384A | 2014-04-30 | |||
| CN103682443A | 2014-03-26 | |||
| CN104466250A | 2015-03-25 |
Other References:
See also references of EP 3442072A4
None
None
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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