Title:
NON-AQUEOUS ELECTROLYTE AND PREPARATION METHOD THEREFOR, AND SECONDARY BATTERY AND ELECTRIC DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/236029
Kind Code:
A1
Abstract:
Provided in the present application are a non-aqueous electrolyte and a preparation method therefor, and a secondary battery and an electric device containing same. The non-aqueous electrolyte contains a non-aqueous solvent, and a lithium ion, a first cation and a first anion, which are dissolved therein, wherein the first cation is a metal cation Men+ other than the lithium ion, and n represents the valence of the metal cation; the first anion is a tetrafluoroborate anion BF4
-; on the basis of the total mass of the non-aqueous electrolyte, the mass concentration of the first cation in the non-aqueous electrolyte is D1 ppm, and the mass concentration of the first anion in the non-aqueous electrolyte is D2 ppm; and the non-aqueous electrolyte satisfies: D1 being in a range of 0.1-1250, and D1/D2 being in a range of 0.02-2. The non-aqueous electrolyte of the present application enables a secondary battery to have a good cycling performance, safety performance and dynamic performance.
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Inventors:
WU ZELI (CN)
CHEN HUILING (CN)
HAN CHANGLONG (CN)
JIANG BIN (CN)
LIU QIAN (CN)
HE JIANFU (CN)
SUN JINGXUAN (CN)
HUANG LEI (CN)
CHEN HUILING (CN)
HAN CHANGLONG (CN)
JIANG BIN (CN)
LIU QIAN (CN)
HE JIANFU (CN)
SUN JINGXUAN (CN)
HUANG LEI (CN)
Application Number:
PCT/CN2022/097306
Publication Date:
December 14, 2023
Filing Date:
June 07, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/0567
Foreign References:
| CN101663790A | 2010-03-03 | |||
| CN106797021A | 2017-05-31 | |||
| US20060204846A1 | 2006-09-14 | |||
| CN113906604A | 2022-01-07 | |||
| JP2002231306A | 2002-08-16 | |||
| JPH0778633A | 1995-03-20 | |||
| US20170200943A1 | 2017-07-13 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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