Title:
ION-CONDUCTING POLYMER COMPRISING PARTIALLY BRANCHED BLOCK COPOLYMER, AND USE FOR SAME
Document Type and Number:
WIPO Patent Application WO/2014/073934
Kind Code:
A1
Abstract:
The present invention relates to: an ion-conducting polymer comprising a partially branched block copolymer; a production method for same; an ion-conducting body comprising the ion-conducting polymer; an electrolytic membrane comprising the ion-conducting polymer; a membrane-electrode assembly incorporating the electrolytic membrane, and a battery incorporating same; and a separation membrane for a redox flow battery comprising the ion-conducting polymer, and a redox flow battery incorporating same. More specifically, the partially branched block copolymer comprises: a first block comprising a hydrophilic first polymer; a second block derived from a hydrophobic second polymer having two or more reactive groups respectively on the two ends, in such a way as to form branching points forming side branches on a main chain; and optionally a third block comprising a hydrophobic third polymer. As compared with traditional ion-conducting polymers in the form of linear block copolymers, the ion-conducting polymer in the form of a partially branched block copolymer according to the present invention can produce a polymer membrane having improved conductivity and superior physical properties such as tensile strength and elongation at break while having the same or similar ion-exchange capacity (IEC), percentage water absorption and/or degree of dimensional variation. Because of such outstanding physical properties, the polymer membrane can be used as a membrane-electrode assembly for a fuel cell; and a redox flow battery incorporating same as a separation membrane can exhibit outstanding cell performance and can maintain high discharge load retention even when repeatedly charged and discharged dozens of times.
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Inventors:
HONG YOUNG TAIK (KR)
LEE JANG YONG (KR)
KIM TAE HO (KR)
YU DUK MAN (KR)
KIM SEOG JE (KR)
LEE JANG YONG (KR)
KIM TAE HO (KR)
YU DUK MAN (KR)
KIM SEOG JE (KR)
Application Number:
PCT/KR2013/010209
Publication Date:
May 15, 2014
Filing Date:
November 11, 2013
Export Citation:
Assignee:
KOREA RES INST CHEM TECH (KR)
International Classes:
C08G61/00; C08F299/00; C08G75/23; H01M8/02
Foreign References:
JP2006312742A | 2006-11-16 | |||
KR20100065349A | 2010-06-16 | |||
KR20050016399A | 2005-02-21 | |||
KR20060130099A | 2006-12-18 | |||
KR20090055737A | 2009-06-03 | |||
JP2010189503A | 2010-09-02 |
Attorney, Agent or Firm:
SON, MIN (KR)
손민 (KR)
손민 (KR)
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