SEPARATOR FOR ELECTROCHEMICAL ELEMENTS, AND ELECTROCHEMICAL ELEMENT

Title:

SEPARATOR FOR ELECTROCHEMICAL ELEMENTS, AND ELECTROCHEMICAL ELEMENT

Document Type and Number:

WIPO Patent Application WO/2019/102958

Kind Code:

A1

Abstract:

Provided is a thin separator for electrochemical elements, which has achieved chemical stability, while maintaining a good balance among short-circuit resistance, resistivity, electrolyte solution impregnatability and electrolyte solution retainability of the separator. A separator for electrochemical elements, which is interposed between a pair of electrodes so as to separate the electrodes from each other, and which holds an electrolyte solution. This separator for electrochemical elements is composed of beaten cellulose fibers and thermoplastic synthetic fibers, and has a thickness of 5.0-30.0 μm and a density of 0.50-0.75 g/cm3; and the thickness X (μm) and the air resistance Y (second/100 ml) of this separator for electrochemical elements satisfy formula 1: Y ≥ 0.01X2 - 0.6X + 11.5.

Inventors:

WADA NORIHIRO (JP)
MATSUOKA GAKU (JP)
ICHIMURA TAKUMI (JP)
NISHIMORI YUHEI (JP)
IGAWA ATSUSHI (JP)

Application Number:

PCT/JP2018/042636

Publication Date:

May 31, 2019

Filing Date:

November 19, 2018

Export Citation:

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Assignee:

NIPPON KODOSHI CORP (JP)

International Classes:

H01G9/02; H01G11/06; H01G11/52; H01M50/414; H01M50/417; H01M50/42; H01M50/429; H01M50/489

Domestic Patent References:

WO2012008559A1

2012-01-19

Foreign References:

JP2015061036A	2015-03-30
JP2000212323A	2000-08-02
JP2017069229A	2017-04-06
JP2017117590A	2017-06-29
JP2011082148A	2011-04-21

Other References: