HIGH-DENSITY SULFONATED MULTIBLOCK POLYMER AND ELECTROCHEMICAL SYSTEM COMPRISING SAME

WIPO Patent Application WO/2015/174591

A1

The present invention relates to a method for preparing a multiblock copolymer, the method comprising the steps of: (A) dissolving a hydrophobic oligomer in a first solvent to obtain a first solution; (B) dissolving a hydrophilic oligomer in a second solvent to obtain a second solution; and (C) bringing the first solution and the second solution into contact with each other, to an electrolyte membrane for an electrochemical battery, containing the multiblock copolymer thus prepared, and to an electrochemical battery comprising the same. The method for preparing a multiblock copolymer according to the present invention has advantages of: increasing the molecular weight, ion-exchange capacity, and yield of the copolymer; improving the uniformity of the molecular weight; having improved proton ion conductivity under a low-humidity condition; and obtaining very improved proton ion conductivity in all humidity regions, compared with the conventional commercial fluorinated electrolyte membrane.

BAE BYUNGCHAN (KR)
LEE SO-JEONG (KR)
YUK JINOK (KR)
SOHN YOUNG-JUN (KR)
PARK GU-GON (KR)
KIM MINJIN (KR)
YIM SUNG-DAE (KR)
CHOI YOUNG-WOO (KR)
PARK SEOK-HEE (KR)
YANG TAE-HYUN (KR)
LEE WON-YONG (KR)
KIM CHANG-SOO (KR)

PCT/KR2014/010099

November 19, 2015

October 27, 2014

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KOREA ENERGY RESEARCH INST (KR)

C08G75/20; C08G75/23; C08G81/00; C08J5/22; C08L81/06; C08L101/12; H01M8/02; H01M8/10

KR20130011676A	2013-01-30
KR20060071690A	2006-06-27
US20040186262A1	2004-09-23
KR20130105535A	2013-09-25
KR20100050423A	2010-05-13

CHUNG HYUN PATENT & LAW FIRM (KR)
특허법인 충현 (KR)

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