Heo, K.-B. Lee, H.-J. Kim, H.-J. Kim, B.-S. Lee, S.-Y. Cho, E. Oh, I.-H. Hong, S.-A. Lim, T.-H. 2024-01-21T00:30:42Z 2024-01-21T00:30:42Z 2021-08-31 2007-10-11 0378-7753 https://pubs.kist.re.kr/handle/201004/134042 Cross-linkable sulfonated poly(ether sulfone) copolymer (PES) is synthesized using 4,4'-dihydroxystilbene, hydroquinone 2-potassium sulfonate (HPS) and 4-fluorophenyl sulfone. Cross-linked PES (c-PES) is obtained by UV irradiation of the cross-linkable membrane. The chemical structure and thermal stability of the copolymers are characterized by means of H-1 NMR, FT-IR and TGA techniques. The c-PES 70 membrane, which has 70 mol% of HPS units in the polymer backbone, has a proton conductivity of 0.12 S cm(-1) and good insolubility in boiling water. A catalyst-coated membrane is used to investigate single-cell performance for PEMFC applications. Humidified hydrogen and oxygen are employed as the fuel and oxidant, respectively. A current density of 1500 mA cm(-2) at 0.60 V is obtained at 70 degrees C. (C) 2007 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV PROTON-EXCHANGE MEMBRANES POLY(ETHER SULFONE)S COPOLYMER MEMBRANES KETONE) LINKING ELECTROLYTE PERFORMANCE Synthesis and characterization of cross-linked poly (ether sulfone) for a fuel cell membrane Article 10.1016/j.jpowsour.2007.07.041 1 JOURNAL OF POWER SOURCES, v.172, no.1, pp.215 - 219 JOURNAL OF POWER SOURCES 172 1 215 219 scie scopus 000250490600028 2-s2.0-34548674194 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article PROTON-EXCHANGE MEMBRANES POLY(ETHER SULFONE)S COPOLYMER MEMBRANES KETONE) LINKING ELECTROLYTE PERFORMANCE catalyst-coated membrane cross-linked polymer membrane-electrode assembly proton exchange membrane fuel cell ultra violet irradiation single-cell performance