Title:
LITHIUM SECONDARY BATTERY ELECTROLYTE AND LITHIUM SECONDARY BATTERY THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/200655
Kind Code:
A1
Abstract:
The present invention relates to a lithium secondary battery electrolyte and a lithium secondary battery thereof. The lithium secondary battery electrolyte comprises an organic solvent, a conductive lithium salt, an ionic liquid and an additive. The ionic liquid is selected from at least one of 1-ethyl-3-methylimidazole tetrafluoroborate and dipyrrolidyl ammonium tetrafluoroborate. For the electrolyte, by adding the ionic liquids 1-ethyl-3-methylimidazole tetrafluoroborate and dipyrrolidyl ammonium tetrafluoroborate to use in combination with additives lithium difluorophosphate, methyl 2-propinylcarbonate, methyl allylcarbonate, and 1,3 propane sultone, the high temperature, normal temperature and low temperature cycle performance of the electrolyte can be improved.
Inventors:
FAN WEIZHEN (CN)
YU LE (CN)
FAN CHAOJUN (CN)
ZHAO JINGWEI (CN)
YU LE (CN)
FAN CHAOJUN (CN)
ZHAO JINGWEI (CN)
Application Number:
PCT/CN2018/087899
Publication Date:
October 24, 2019
Filing Date:
May 22, 2018
Export Citation:
Assignee:
GUANGZHOU TINCI MATERIALS TECH CO LTD (CN)
International Classes:
H01M10/0525
Foreign References:
| CN102468515A | 2012-05-23 | |||
| CN102768901A | 2012-11-07 | |||
| CN201110040162A | 2011-02-18 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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