Title:
POROUS FILM, SEPARATOR FOR SECONDARY CELL, AND SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2020/105673
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a porous film having high adhesion to electrodes and having excellent thermal dimensional stability and cell characteristics. This porous film has a porous layer laminated on at least one surface of a porous substrate, the porous layer comprising inorganic particles and organic resin particles. The content α by mass of the inorganic particles contained in the porous layer is 50% to 95% by mass. When the surface elasticity of the porous layer is measured 50 times, the proportion of measured surface elasticities in the range of γ/2 or less is 30% to less than 100%, where γ is the maximum value of surface elasticity.
Inventors:
KAMON KEIICHI (JP)
KAI NOBUYASU (JP)
TSUKUDA AKIMITSU (JP)
KAI NOBUYASU (JP)
TSUKUDA AKIMITSU (JP)
Application Number:
PCT/JP2019/045404
Publication Date:
May 28, 2020
Filing Date:
November 20, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B5/32; H01M50/443; H01M50/489; H01M50/491
Domestic Patent References:
| WO2014083988A1 | 2014-06-05 | |||
| WO2013133074A1 | 2013-09-12 | |||
| WO2017094252A1 | 2017-06-08 | |||
| WO2017094250A1 | 2017-06-08 | |||
| WO2010024328A1 | 2010-03-04 | |||
| WO2013151144A1 | 2013-10-10 | |||
| WO2017033993A1 | 2017-03-02 |
Other References:
See also references of EP 3885126A4
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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