SEPARATOR FOR NONAQUEOUS SECONDARY BATTERIES, AND NONAQUEOUS SECONDARY BATTERY

Title:

SEPARATOR FOR NONAQUEOUS SECONDARY BATTERIES, AND NONAQUEOUS SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2017/082259

Kind Code:

A1

Abstract:

A separator for nonaqueous secondary batteries, which is provided with: a porous base; and an adhesive porous layer that is disposed on both surfaces or one surface of the porous base and contains a vinylidene fluoride-hexafluoropropylene binary copolymer having a ratio of a hexafluoropropylene monomer unit of from 5.1% by mass to 6.9% by mass (inclusive) and a weight average molecular weight of from 810,000 to 3,000,000 (inclusive) such that the vinylidene fluoride-hexafluoropropylene binary copolymer accounts for 95% by mass or more of all resins.

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Inventors:

NISHIKAWA SATOSHI (JP)
YOSHITOMI TAKASHI (JP)
KURATANI RIKA (JP)

Application Number:

PCT/JP2016/083137

Publication Date:

May 18, 2017

Filing Date:

November 08, 2016

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Assignee:

TEIJIN LTD (JP)

International Classes:

H01M50/417; H01M50/42; H01M50/423; H01M50/426; H01M50/443; H01M50/489; H01M50/491

Domestic Patent References:

WO2014083988A1	2014-06-05
WO2014021293A1	2014-02-06

Foreign References:

JP2015118841A	2015-06-25
JP2012221741A	2012-11-12
JP2012074367A	2012-04-12

Attorney, Agent or Firm:

NAKAJIMA, Jun et al. (JP)

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