Title:
SEPARATOR FILM FOR ELECTRICITY STORAGE DEVICES AND LITHIUM ION BATTERY PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2020/203207
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a separator film for electricity storage devices, which is not susceptible to increase in the ionic resistance even in comparison to single layer porous films, and which exhibits high adhesion of a coating film to a resin porous film; and a lithium ion battery which is provided with this separator film for electricity storage devices. A separator film for electricity storage devices, which comprises a resin porous film and a coating film that is formed on one surface or both surfaces of the resin porous film, wherein: the coating film is composed of the solid content of an aqueous composition for coating, which contains a binder and a filler; and the binder contains 50% by weight or more of a water-soluble acrylic resin that contains 40-45% by weight of a hydroxyl group-containing monomer unit and 8-12% by weight of an acetyl group-containing monomer.
Inventors:
ENOKI NOBUO (JP)
ITOU SHINGO (JP)
ITOU SHINGO (JP)
Application Number:
PCT/JP2020/011331
Publication Date:
October 08, 2020
Filing Date:
March 16, 2020
Export Citation:
Assignee:
JNC CORP (JP)
JNC PETROCHEMICAL CORP (JP)
JNC PETROCHEMICAL CORP (JP)
International Classes:
H01M50/443; H01M50/489
Foreign References:
| JP2014229427A | 2014-12-08 | |||
| JP2015026609A | 2015-02-05 | |||
| JP2018163872A | 2018-10-18 |
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