Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, BATTERY MODULE AND BATTERY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/048653
Kind Code:
A1
Abstract:
A nonaqueous electrolyte secondary battery (10) which is provided with a positive electrode (1), a negative electrode (3), and a nonaqueous electrolyte solution (4) that is present between the positive electrode (1) and the negative electrode (3), wherein: the positive electrode (1) comprises a positive electrode collector (11) and a positive electrode active material layer (12) that is present on the positive electrode collector (11); a collector covering layer, which contains a conductive material, is present on at least a part of the positive electrode active material layer (12)-side surface of the positive electrode collector (11); the positive electrode active material layer (12) contains positive electrode active material particles; the positive electrode active material particles include covered particles, each of which comprises a core part that is formed of a positive electrode active material and an active material covering part that contains a conductive carbon; the positive electrode active material contains a compound which is represented by LiFexM(1-x)PO4; the content of the conductive carbon relative to the total mass of the positive electrode active material layer (12) is not less than 0.5% by mass but less than 3.5% by mass; and the ratio A/C of the capacity A of the negative electrode (3) to the capacity C of the positive electrode (1) is 1.1 to 1.5.
Inventors:
YOSHIKAWA HIKARU (JP)
AKIIKE JUNNOSUKE (JP)
AKIIKE JUNNOSUKE (JP)
Application Number:
PCT/JP2023/031540
Publication Date:
March 07, 2024
Filing Date:
August 30, 2023
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H01M10/052; H01M4/136; H01M4/36; H01M4/58; H01M4/66; H01M10/0566
Foreign References:
| JP2017068958A | 2017-04-06 | |||
| JP2013187034A | 2013-09-19 | |||
| JP2018041710A | 2018-03-15 | |||
| JP2018056034A | 2018-04-05 | |||
| JP2021132031A | 2021-09-09 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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