Title:
LAMINATED POROUS MEMBRANE, AND BATTERY SEPARATOR COMPRISING LAMINATED POROUS MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2024/085058
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a laminated porous membrane which can shorten electrolyte injection time in a battery manufacturing process; and a battery separator comprising the laminated porous membrane. The laminated porous membrane comprises a polyolefin porous membrane, and a porous layer on at least one side surface of the polyolefin porous membrane, wherein: the porous layer includes inorganic particles and an organic synthetic resin component; and a large-diameter average particle size (A) [μm] and a small-diameter average particle size (B) [μm] of the inorganic particles as determined by the method described in the specification satisfy a specific relational expression.
Inventors:
HAGIHARA TATSUNORI (JP)
Application Number:
PCT/JP2023/037003
Publication Date:
April 25, 2024
Filing Date:
October 12, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
H01M50/451; B32B5/18; B32B5/32; B32B27/20; B32B27/32; H01M50/414; H01M50/417; H01M50/434; H01M50/443; H01M50/446; H01M50/463
Domestic Patent References:
| WO2014017662A1 | 2014-01-30 |
Foreign References:
| JP2016072154A | 2016-05-09 |
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