Invention Grant
- Patent Title: Slurry composition for non-aqueous secondary battery functional layer, separator for non-aqueous secondary battery, and non-aqueous secondary battery
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Application No.: US17310671Application Date: 2020-02-03
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Publication No.: US12272837B2Publication Date: 2025-04-08
- Inventor: Kazuki Asai , Keiichiro Tanaka
- Applicant: ZEON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: ZEON CORPORATION
- Current Assignee: ZEON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: KENJA IP LAW PC
- Priority: JP2019-033225 20190226
- International Application: PCT/JP2020/003946 WO 20200203
- International Announcement: WO2020/175025 WO 20200903
- Main IPC: H01M50/449
- IPC: H01M50/449 ; C08L25/04 ; H01M10/0525 ; H01M10/0568 ; H01M10/0569 ; H01M50/414 ; H01M50/443 ; H01M50/409 ; H01M50/489

Abstract:
Provided is a slurry composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent adhesiveness after immersion in electrolyte solution and can cause a secondary battery to display excellent rate characteristics and cycle characteristics while, on the other hand, reducing the amount of gas remaining inside the secondary battery. The slurry composition contains a particulate polymer and a solvent. The particulate polymer has a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The particulate polymer has a glass-transition temperature of 20° C. or higher and has a surface acid content of not less than 0.05 mmol/g and not more than 0.50 mmol/g.
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