Invention Grant
- Patent Title: Porous separator for secondary batteries and secondary battery using same
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Application No.: US15124528Application Date: 2015-03-12
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Publication No.: US10763480B2Publication Date: 2020-09-01
- Inventor: Tsukasa Sugawara
- Applicant: Tokyo Ohka Kogyo Co., Ltd.
- Applicant Address: JP Kanagawa
- Assignee: TOKYO OHKA KOGYO CO., LTD.
- Current Assignee: TOKYO OHKA KOGYO CO., LTD.
- Current Assignee Address: JP Kanagawa
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@9388d1 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@104b886a com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@756bd346
- International Application: PCT/JP2015/057357 WO 20150312
- International Announcement: WO2015/137461 WO 20150917
- Main IPC: H01M2/16
- IPC: H01M2/16 ; H01M2/14 ; H01M10/0525 ; H01M10/052 ; H01M4/13
Abstract:
A porous separator for secondary batteries is formed of a porous film, and has a first layered region having an average pore diameter of 100 nm or more and 500 nm or less, and a second layered region having a larger average pore diameter than the first layered region. The first layered region is positioned in one outermost surface of the porous film. Both the first layered region and the second layered region may be positioned as outermost surfaces of the porous film.
Public/Granted literature
- US20170018749A1 POROUS SEPARATOR FOR SECONDARY BATTERIES AND SECONDARY BATTERY USING SAME Public/Granted day:2017-01-19
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