Kim, Woon-Jo Mehmood, Asad Lee, Kwan-Young Ha, Heung Yong 2024-01-20T12:34:39Z 2024-01-20T12:34:39Z 2021-09-01 2013-03-01 0378-7753 https://pubs.kist.re.kr/handle/201004/128255 The anodes of membrane-electrode assemblies (MEAs) have been treated with an argon ion-beam under vacuum to etch out a part of the ionomer present in the catalyst layers. The ion beam treatment alters the surface morphology of the catalyst layer by promoting the pore size and overall porosity, which reduces the mass transport resistance of the reactants and the products through the catalyst layers. As confirmed, the electrochemical surface areas of the electrodes are not affected by the treatment, and the ion-beam-treated MEAs exhibit improved performance toward direct methanol fuel cells (DMFCs). Physical and electrochemical analyses have been carried out to characterize the modified electrodes in greater detail. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV CATALYST LAYER PERFORMANCE MEMBRANE SURFACE MICROSTRUCTURE SOLVENT INK Modification of the pore structures of fuel cell electrodes using a dry etching technique Article 10.1016/j.jpowsour.2012.10.042 1 JOURNAL OF POWER SOURCES, v.225, pp.119 - 123 JOURNAL OF POWER SOURCES 225 119 123 scie scopus 000313923400018 2-s2.0-84868314465 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article CATALYST LAYER PERFORMANCE MEMBRANE SURFACE MICROSTRUCTURE SOLVENT INK Direct methanol fuel cell Membrane-electrode assembly Electrode structure Ion-beam treatment Electrode porosity