BRANCHED COPOLYMER PROTON EXCHANGE MEMBRANE COMPRISING NAFION-GRAFTED GRAPHENE OXIDE AND WATER ELECTROLYSIS SYSTEM USING SAME

WIPO Patent Application WO/2024/029917

A1

The present invention relates to a branched copolymer proton exchange membrane comprising a Nafion-grafted graphene oxide, and a water electrolysis system using same. The present invention provides excellent chemical stability due to comprising fluorene, which is stable to radicals, and having a polymer main chain entirely consisting only of C-C bonds, and the manufactured composite membrane has improved hydrogen ion conductivity by comprising a modified graphene oxide.

KIM KI HYUN (KR)
NAM SANG YONG (KR)
KIM MI JEONG (KR)
KO HAN SOL (KR)
HWANG IN HYEOK (KR)
JEONG YU GYEONG (KR)
LEE HYEON GYEONG (KR)
CHOI CHAN HEE (KR)
HWANG SEAN SOO (KR)

PCT/KR2023/011315

February 08, 2024

August 02, 2023

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NAT UNIV GYEONGSANG IACF (KR)

C08J5/22; C08F292/00; C08G61/02; C08L27/22; C08L51/10; C25B1/04; C25B13/08

KR20210071810A	2021-06-16
KR20220091725A	2022-07-01
CN113956445A	2022-01-21

PAGELS MICHAEL K., ADHIKARI SANTOSH, WALGAMA RAMALI C., SINGH ASHEESH, HAN JUNYOUNG, SHIN DONGWON, BAE CHULSUNG: "One-Pot Synthesis of Proton Exchange Membranes from Anion Exchange Membrane Precursors", ACS MACRO LETTERS, vol. 9, no. 10, 20 October 2020 (2020-10-20), pages 1489 - 1493, XP093065761, ISSN: 2161-1653, DOI: 10.1021/acsmacrolett.0c00550
LEE WOO-HYUNG, KIM YU SEUNG, BAE CHULSUNG: "Robust Hydroxide Ion Conducting Poly(biphenyl alkylene)s for Alkaline Fuel Cell Membranes", ACS MACRO LETTERS, vol. 4, no. 8, 18 August 2015 (2015-08-18), pages 814 - 818, XP055893866, ISSN: 2161-1653, DOI: 10.1021/acsmacrolett.5b00375

KIM, Jong Seok (KR)

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