SEPARATOR FOR NONAQUEOUS ELECTROLYTE BATTERIES, AND NONAQUEOUS ELECTROLYTE BATTERY

Title:

SEPARATOR FOR NONAQUEOUS ELECTROLYTE BATTERIES, AND NONAQUEOUS ELECTROLYTE BATTERY

Document Type and Number:

WIPO Patent Application WO/2014/208454

Kind Code:

A1

Abstract:

A separator for nonaqueous electrolyte batteries, which comprises a multilayer porous membrane that is provided with: a polyolefin microporous membrane; and a porous layer that contains an inorganic filler and is provided on at least one surface of the polyolefin microporous membrane. This separator for nonaqueous electrolyte batteries is characterized in that with respect to pores having an area of 0.01 μm2 or more in a cross-section of the porous layer of the multilayer porous membrane, not less than 30% of the pores have an angle θ satisfying 60° ≤ θ ≤ 120°, said angle θ being the angle between the major axis of each pore and an axis that is parallel to the interface between the microporous membrane and the porous layer.

More Like This:

JP2002110473	ELECTROLYTE AND ELECTRICAL DOUBLE LAYER CAPACITOR
WO/2016/138258	IMPROVED SEPARATORS FOR HIGH VOLTAGE RECHARGEABLE LITHIUM BATTERIES AND RELATED METHODS
JP7353267	Method for stabilizing aqueous dispersions of fluoropolymers

Inventors:

UCHIDA YUKI (JP)
MURATA HIROSHI (JP)
HATAYAMA HIROSHI (JP)
ISHIKAWA MASAKI (JP)

Application Number:

PCT/JP2014/066335

Publication Date:

December 31, 2014

Filing Date:

June 19, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ASAHI KASEI E MATERIALS CORP (JP)

International Classes:

H01G11/52; H01M50/417; H01M50/434; H01M50/451

Foreign References:

JP2007083549A	2007-04-05
JP2008524824A	2008-07-10
JP2011113915A	2011-06-09
JP2007123237A	2007-05-17
JP4789274B2	2011-10-12

Other References: