Jeong, Gisu Kim, MinJoong Han, Junyoung Kim, Hyoung-Juhn Shul, Yong-Gun Cho, EunAe 2024-01-20T03:33:27Z 2024-01-20T03:33:27Z 2021-09-05 2016-08-15 0378-7753 https://pubs.kist.re.kr/handle/201004/123785 Although high-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) have a high carbon monoxide tolerance and allow for efficient water management, their practical applications are limited due to their lower performance than conventional low-temperature PEMFCs. Herein, we present a high-performance membrane-electrode assembly (MEA) with an optimal polytetrafluoroethylene (PTFE) content for HT-PEMFCs. Low or excess PTFE content in the electrode leads to an inefficient electrolyte distribution or severe catalyst agglomeration, respectively, which hinder the formation of triple phase boundaries in the electrodes and result in low performance. MEAs with PTFE content of 20 wt% have an optimal pore structure for the efficient formation of electrolyte/catalyst interfaces and gas channels, which leads to high cell performance of approximately 0.5 A cm(-2) at 0.6 V. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER ACID-DOPED POLYBENZIMIDAZOLE WATER MANAGEMENT IONOMER CONTENT CATALYST LAYER NAFION CONTENT IMPURITY IONS ANODE SIDE PEMFC FABRICATION PLATINUM High-performance membrane-electrode assembly with an optimal polytetrafluoroethylene content for high-temperature polymer electrolyte membrane fuel cells Article 10.1016/j.jpowsour.2016.05.042 1 JOURNAL OF POWER SOURCES, v.323, pp.142 - 146 JOURNAL OF POWER SOURCES 323 142 146 scie scopus 000378192100018 2-s2.0-84969555994 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article ACID-DOPED POLYBENZIMIDAZOLE WATER MANAGEMENT IONOMER CONTENT CATALYST LAYER NAFION CONTENT IMPURITY IONS ANODE SIDE PEMFC FABRICATION PLATINUM High-temperature polymer electrolyte membrane fuel cell Phosphoric acid Membrane electrode assembly Polytetrafluoroethylene Pore structure