US 12,218,391 B2
Polymer electrolyte membrane, manufacturing method therefor, and electrochemical device comprising same
Jung Hwa Park, Seoul (KR); Kwang Sei Oh, Seoul (KR); Dong Hoon Lee, Seoul (KR); Na Young Kim, Seoul (KR); Eun Su Lee, Seoul (KR); and Seung Jib Yum, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/620,199
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Jul. 3, 2020, PCT No. PCT/KR2020/008705
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2021/006551, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 10-2019-0082178 (KR), filed on Jul. 8, 2019.
Prior Publication US 2022/0238901 A1, Jul. 28, 2022
Int. Cl. H01M 8/1027 (2016.01); H01M 8/1023 (2016.01); H01M 8/1025 (2016.01); H01M 8/1032 (2016.01); H01M 8/1044 (2016.01); H01M 8/106 (2016.01); H01M 8/1072 (2016.01); H01M 8/1081 (2016.01)
CPC H01M 8/1027 (2013.01) [H01M 8/1025 (2013.01); H01M 8/1072 (2013.01); H01M 8/1023 (2013.01); H01M 8/1032 (2013.01); H01M 8/1044 (2013.01); H01M 8/106 (2013.01); H01M 8/1081 (2013.01)] 14 Claims
 
1. A polymer electrolyte membrane comprising:
a non-crosslinked ion conductor; and
a porous support having a plurality of pores filled with the ion conductor,
wherein the porous support comprises a polyphenylene sulfide copolymer substituted with at least one crosslinking functional group selected from the group consisting of a hydroxyl group (—OH), a carboxyl group (—COOH), and an amine group (—NH2),
the polyphenylene sulfide copolymer substituted with the crosslinking functional group comprises:
a first repeating unit having the crosslinking functional group; and
a second repeating unit not having the crosslinking functional group,
a ratio of the number of the first repeating unit to the number of the second repeating unit (the number of first repeating unit: the number of second repeating unit) is 1:99 to 50:50, and
the crosslinking functional group is capable of being bonded to the ion conductor upon occurrence of degradation of the ion conductor to thereby cause the degraded ion conductor to be crosslinked.