Invention Grant
- Patent Title: Method for producing positive electrode for nonaqueous electrolyte secondary batteries and method for producing nonaqueous electrolyte secondary battery
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Application No.: US16257751Application Date: 2019-01-25
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Publication No.: US10741831B2Publication Date: 2020-08-11
- Inventor: Kazuya Hashimoto
- Applicant: SANYO Electric Co., Ltd.
- Applicant Address: JP Daito-shi, Osaka
- Assignee: SANYO Electric Co., Ltd.
- Current Assignee: SANYO Electric Co., Ltd.
- Current Assignee Address: JP Daito-shi, Osaka
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3a590935
- Main IPC: H01M4/36
- IPC: H01M4/36 ; H01M4/131 ; H01M4/133 ; H01M4/1393 ; H01M4/04 ; H01M10/0587 ; H01M4/1391 ; H01M4/02

Abstract:
A method for producing a positive electrode for a nonaqueous electrolyte secondary battery includes forming a positive electrode mixture layer on a positive electrode core, the positive electrode mixture layer containing hollow positive electrode active material particles having a BET specific surface area X of 1.5 m2/g or more; and compressing the positive electrode mixture layer. The ratio of the BET specific surface area Y of the positive electrode active material particles after the compression to the BET specific surface area X (Y/X) is between 1.05 and 1.35.
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