Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/042998
Kind Code:
A1
Abstract:
Provided is a non-aqueous electrolyte secondary battery, wherein discharge cycle characteristics are improved while ensuring high battery capacity. The non-aqueous electrolyte secondary battery according to the present disclosure includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a lithium-containing complex oxide and a sulfonic acid compound present on the particle surface of the complex oxide. The sulfonic acid compound is a compound represented by formula (I). The negative electrode includes at least a silicon-containing material as a negative electrode active material. The proportion of silicon-containing material in the negative electrode active material is 3% by mass or more. The discharge capacity of the negative electrode active material is 380 mAh/g or more. (In the formula, A is a Group 1 element or a Group 2 element; R is a hydrocarbon group; and n is 1 or 2.)
Inventors:
IWAMOTO TAKUYA
GOTO NATSUMI
TSUKASAKI TAKASHI
GOTO NATSUMI
TSUKASAKI TAKASHI
Application Number:
PCT/JP2023/027692
Publication Date:
February 29, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M10/052; H01M4/131; H01M4/133; H01M4/36; H01M4/48; H01M4/587
Domestic Patent References:
| WO2020044930A1 | 2020-03-05 |
Foreign References:
| JP2019169286A | 2019-10-03 | |||
| CN102610790A | 2012-07-25 | |||
| JP2018006164A | 2018-01-11 | |||
| JP2021128917A | 2021-09-02 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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