DIAPHRAGM FOR REDOX FLOW BATTERIES, METHOD FOR PRODUCING DIAPHRAGM FOR REDOX FLOW BATTERIES, DIAPHRAGM ELECTRODE ASSEMBLY FOR REDOX FLOW BATTERIES, CELL FOR REDOX FLOW BATTERIES, AND REDOX FLOW BATTERY

Title:

Document Type and Number:

WIPO Patent Application WO/2021/215126

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing: a diaphragm for redox flow batteries, said diaphragm being suppressed in curling, while exhibiting high electric power efficiency; a diaphragm electrode assembly for redox flow batteries; a cell for redox flow batteries; and a redox flow battery. This problem is able to be solved by a diaphragm for redox flow batteries, said diaphragm being sequentially provided with a first ion exchange resin layer, an anion exchange resin layer that contains an anion exchange compound, and a second ion exchange resin layer in this order, wherein: the value obtained by dividing the thickness of the first ion exchange resin layer by the thickness of the second ion exchange resin layer is from 0.7 to 1.3; and the thickness of the anion exchange resin layer is from 0.02 μm to 3 μm.

Inventors:

KAMOCHI HIROKO (JP)
KANADA YUKA (JP)
KAI KAZUYA (JP)
YAMASHITA JUNYA (JP)

Application Number:

PCT/JP2021/008480

Publication Date:

October 28, 2021

Filing Date:

March 04, 2021

Export Citation:

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Assignee:

ASAHI CHEMICAL IND (JP)

International Classes:

H01M8/18; H01M8/1018; H01M8/1053; H01M8/1067; H01M8/1069

Domestic Patent References:

WO2006028292A1	2006-03-16
WO2002062879A1	2002-08-15

Foreign References:

JPH0992321A	1997-04-04
JPH11260390A	1999-09-24
JPH11329474A	1999-11-30
JP2001167787A	2001-06-22
JP2018026242A	2018-02-15
JP2019102225A	2019-06-24
JP2019507006W
JPH11260390A	1999-09-24

Attorney, Agent or Firm:

INABA, Yoshiyuki et al. (JP)

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