US 12,334,613 B2
Polymer electrolyte membrane, membrane-electrode assembly comprising same, and fuel cell
Eun Su Lee, Seoul (KR); Dong Hoon Lee, Seoul (KR); Na Young Kim, Seoul (KR); Jung Hwa Park, Seoul (KR); and Hye Song Lee, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/767,436
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Sep. 17, 2021, PCT No. PCT/KR2021/012834
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2022/071684, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 10-2020-0127266 (KR), filed on Sep. 29, 2020; and application No. 10-2021-0124025 (KR), filed on Sep. 16, 2021.
Prior Publication US 2024/0113318 A1, Apr. 4, 2024
Int. Cl. H01M 8/1053 (2016.01); H01M 8/10 (2016.01); H01M 8/1004 (2016.01); H01M 8/1027 (2016.01); H01M 8/1032 (2016.01); H01M 8/1039 (2016.01); H01M 8/1058 (2016.01); H01M 8/1067 (2016.01)
CPC H01M 8/1053 (2013.01) [H01M 8/1004 (2013.01); H01M 8/1027 (2013.01); H01M 8/1032 (2013.01); H01M 8/1039 (2013.01); H01M 8/1058 (2013.01); H01M 8/1067 (2013.01); H01M 2008/1095 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A polymer electrolyte membrane comprising:
a porous support; and
a composite layer containing a first ionomer filled in the porous support,
wherein the polymer electrolyte membrane comprises a first segment having a first durability and a second segment having a second durability, and the first durability is higher than the second durability,
wherein the first segment comprises a first sub-layer and a second sub-layer disposed on the first sub-layer, the second segment has a single layer structure, the first sub-layer and the second segment contain a first ionomer, the second sub-layer contains a second ionomer, and the durability of the second ionomer is higher than that of the first ionomer.