Title:
NON-AQUEOUS LIQUID ELECTROLYTE, AND NON-AQUEOUS LIQUID-ELECTROLYTE SECONDARY CELL IN WHICH SAID NON-AQUEOUS LIQUID ELECTROLYTE IS USED
Document Type and Number:
WIPO Patent Application WO/2022/054471
Kind Code:
A1
Abstract:
The present invention provides a non-aqueous liquid electrolyte that can undergo capacity loss during continuous charging of a cell. A non-aqueous liquid electrolyte containing oxalato-complex anions (A), LiPF6, a symmetrical chain-form carbonate, and a chain-form carboxylic acid ester (C) in which the viscosity at 25°C is 0.01-0.47 cP, wherein the non-aqueous liquid electrolyte is characterized in that: the ratio (A/B) of the amount (mass) of oxalato-complex anions (A) to the amount (mass) of PF6
- anions (B) is 0.0001-0.30; and the total amount of the symmetrical chain-form carbonate and the chain-form carboxylic acid ester (C) in which the viscosity at 25°C is 0.01-0.47 cP, relative to the total amount of the non-aqueous liquid electrolyte, is 1-45 mass%.
Inventors:
NISHIO KOICHI (JP)
KAWAKAMI DAISUKE (JP)
KAWAKAMI DAISUKE (JP)
Application Number:
PCT/JP2021/029028
Publication Date:
March 17, 2022
Filing Date:
August 04, 2021
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
MU IONIC SOLUTIONS CORP (JP)
MU IONIC SOLUTIONS CORP (JP)
International Classes:
H01M4/13; H01M4/505; H01M4/525; H01M10/052; H01M10/0567; H01M10/0568; H01M10/0569
Domestic Patent References:
| WO2016009994A1 | 2016-01-21 | |||
| WO2015111676A1 | 2015-07-30 |
Foreign References:
| JP2008135273A | 2008-06-12 | |||
| JP2017527971A | 2017-09-21 | |||
| JP2019114419A | 2019-07-11 | |||
| JP2018129256A | 2018-08-16 | |||
| US20120007560A1 | 2012-01-12 | |||
| US20060172202A1 | 2006-08-03 | |||
| EP3422458A1 | 2019-01-02 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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