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Patent Searching and Data


Title:
POROUS FILM, SEPARATOR FOR RECHARGEABLE BATTERY, AND RECHARGEABLE BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/155287
Kind Code:
A1
Abstract:
The purpose of this invention is to provide, at low cost, a porous film having high thermal film rupture resistance and outstanding battery characteristics. The porous film has a porous layer on at least one surface of a porous substrate, and if the surface porosity of the porous layer is defined as α and the cross-sectional void ratio of the porous layer is defined as β, then α/β does not exceed 90%.

Inventors:
KAI NOBUYASU (JP)
IKOMA KEI (JP)
TSUKUDA AKIMITSU (JP)
Application Number:
JP2018/005159
Publication Date:
August 30, 2018
Filing Date:
February 15, 2018
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B5/32; B32B27/32; B32B27/34; H01M2/16
Foreign References:
JP2003086162A2003-03-20
JP2016172426A2016-09-29
JP2011192529A2011-09-29
JP2009070609A2009-04-02
JP2015071241A2015-04-16
JP2002270550A2002-09-20
JP2014198832A2014-10-23
JP5183435B22013-04-17
JP3175730B22001-06-11
Other References:
See also references of EP 3587101A4
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