Title:
ION EXCHANGE FILM SUITABLE FOR REDOX-FLOW BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/088298
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an ion exchange film that, when applied to a redox-flow battery, has excellent electrical current efficiency and can suppress a decrease in voltage efficiency. An ion exchange film according to the present invention is an ion exchange film containing a fluorine-containing polymer having a sulfonic acid functional group, wherein the difference (D-Dc) between the distance D between ion clusters and the diameter Dc of an ion cluster as measured by the small angle X-ray scattering method is 0.60 nm or more, and the ion exchange capacity of the fluorine-containing polymer is 0.95 mm equivalent/gram dry resin or more.
Inventors:
YAMAKI YASUSHI (JP)
SUMIKURA KOSUKE (JP)
MIYAJIMA TATSUYA (JP)
NISHIO TAKUO (JP)
SUMIKURA KOSUKE (JP)
MIYAJIMA TATSUYA (JP)
NISHIO TAKUO (JP)
Application Number:
PCT/JP2018/041161
Publication Date:
May 09, 2019
Filing Date:
November 06, 2018
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
H01M8/18; C08J5/22; H01M8/1023; H01M8/1039
Domestic Patent References:
| WO2013100079A1 | 2013-07-04 | |||
| WO2011034179A1 | 2011-03-24 |
Foreign References:
| JP2014135144A | 2014-07-24 | |||
| JP2005294171A | 2005-10-20 | |||
| JP2008293709A | 2008-12-04 | |||
| JP2008066113A | 2008-03-21 | |||
| JP2016524280A | 2016-08-12 | |||
| JP2015097219A | 2015-05-21 | |||
| JP2017213888A | 2017-12-07 |
Other References:
GIERKE, T. D.MUNN, G. E.WILSON, FCD: "The morphology in nafion perfluorinated membrane products, as determined by wide-and small-angle x-ray studies", JOURNAL OF POLYMER SCIENCE PART B: POLYMER PHYSICS, vol. 19.11, 1981, pages 1687 - 1704, XP002276964
Attorney, Agent or Firm:
SENMYO Kenji et al. (JP)
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