Invention Grant
- Patent Title: Nonaqueous electrolyte secondary battery
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Application No.: US16223861Application Date: 2018-12-18
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Publication No.: US10741815B2Publication Date: 2020-08-11
- Inventor: Ichiro Arise , Toshihiko Ogata , Kosuke Kurakane , Chikara Murakami
- Applicant: Sumitomo Chemical Company, Limited
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
- Current Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
- Current Assignee Address: JP Tokyo
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@38879b1f
- Main IPC: H01M2/16
- IPC: H01M2/16 ; H01M4/48 ; H01M4/583 ; H01M10/0525 ; H01M4/587

Abstract:
A nonaqueous electrolyte secondary battery includes: a separator including a polyolefin porous film; a porous layer containing a polyvinylidene fluoride-based resin; a positive electrode plate; and a negative electrode plate, wherein a sum of interface barrier energies being a predetermined value, the polyolefin porous film having a puncture strength of a predetermined value, the value represented by Formula (1) below being not less than 0.00 and not more than 0.54, |1−T/M| Formula (1), and the polyvinylidene fluoride-based resin containing an α-form polyvinylidene fluoride-based resin in an amount of not less than 35.0 mol %.
Public/Granted literature
- US20190189990A1 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2019-06-20
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