US 11,967,746 B2
Electrolyte membrane of membrane-electrode assembly including electronic insulation layer and preparation method thereof
Byoung Su Kim, Gyeonggi-do (KR); Yong Min Kim, Seoul (KR); Ha Yeong Yu, Seoul (KR); Jin Yi Choi, Gyeonggi-do (KR); Ju Ahn Park, Gyeonggi-do (KR); Ju Young Lee, Gyeonggi-do (KR); Jung Ik Kim, Gyeonggi-do (KR); and Min Kyung Kim, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Nov. 25, 2019, as Appl. No. 16/694,222.
Claims priority of application No. 10-2019-0036174 (KR), filed on Mar. 28, 2019.
Prior Publication US 2020/0313216 A1, Oct. 1, 2020
Int. Cl. H01M 8/1053 (2016.01); H01M 4/88 (2006.01); H01M 4/92 (2006.01); H01M 8/10 (2016.01); H01M 8/1004 (2016.01); H01M 8/1069 (2016.01)
CPC H01M 8/1053 (2013.01) [H01M 4/881 (2013.01); H01M 4/8828 (2013.01); H01M 4/92 (2013.01); H01M 8/1004 (2013.01); H01M 8/1069 (2013.01); H01M 2008/1095 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electrolyte membrane of a membrane-electrode assembly, comprising:
an ion exchange layer; and
an electronic insulation layer provided on the ion exchange layer,
wherein the electronic insulation layer comprises:
one or more catalyst complexes, each of which comprises a catalyst particle and a first ionomer coated on an entire surface of all of the catalyst particle; and
a second ionomer comprising a polymer matrix dispersing the one or more catalyst complexes,
wherein the first ionomer comprises a polymer material having a shorter side chain group than the polymer matrix of the second ionomer.