Jung, Jeawoo Park, Hyun S. Han, Jonghee Kim, Hyoung-Juhn Henkensmeier, Dirk Yoo, Sung Jong Kim, Jin Young Lee, So Young Song, Kwang Ho Park, Hee-Young Jang, Jong Hyun 2024-01-19T16:04:24Z 2024-01-19T16:04:24Z 2021-09-02 2020-11 0360-3199 https://pubs.kist.re.kr/handle/201004/117889 Electrode structure improvement is one of the most promising paths for improving the durability of polymer electrolyte membrane fuel cells (PEMFCs). As strategies to prevent structural deformation and enhance the durability of membrane electrode assemblies (MEAs) with structurally ordered PtCo/C-based cathodes, we evaluated the effect of hot pressing and reinforcing the electrode's structure by increasing the ionomer content. Even though the initial performances of the hot-pressed MEA (HP) and the MEA with extra cathode ionomer (EI) were lower than that of the conventional MEA (CE) by 13.6% and 19.1%, respectively, CE degraded much more significantly than HP and EI after an accelerated degradation test. Therefore, HP and EI could deliver significantly higher single cell performances than CE (22.7% and 43.7%, respectively). The improvements in the durability of HP and EI could be correlated with the structural stability which could be evaluated by structure and electrochemical analysis including electrochemical impedance spectroscopy. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD Effect of the fabrication condition of membrane electrode assemblies with carbon-supported ordered PtCo electrocatalyst on the durability of polymer electrolyte membrane fuel cells Article 10.1016/j.ijhydene.2020.03.053 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.45, no.57, pp.32834 - 32843 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45 57 32834 32843 N scie scopus 000588285000010 2-s2.0-85087387698 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article CATHODE CATALYST LAYERS ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY OXYGEN REDUCTION REACTION PLATINUM DISSOLUTION OPERATING-CONDITIONS KINETIC-MODEL EX-SITU PEMFC DEGRADATION PERFORMANCE Polymer electrolyte membrane fuel cell Durability Carbon supported ordered PtCo electrocatalyst Hot press Electrode structure reinforcement