Vengatesan, Singaram Kim, Hyoung-Juhn Lee, Sang-Yeop Cho, EunAe Ha, Heung Yong Oh, In-Hwan Lim, Tae-Hoon 2024-01-21T01:02:33Z 2024-01-21T01:02:33Z 2021-09-02 2007-05-15 0378-7753 https://pubs.kist.re.kr/handle/201004/134393 Composite membranes with hydrophilic substances can retain water and allow the operation of proton exchange membrane fuel cells (PEMFCs) under non-humidified conditions. In this work, thin Nafion composite membranes with silica are prepared to operate a PEMFC with dry fuel and oxidant. In addition, the role of silica in the catalyst layer as a water retainer is studied. In particular, the anode and the cathode are modified separately to elucidate the effect of silica. The incorporation of silica in the membrane and the catalyst layer enhances single-cell performance under non-humidified operation. The cell performance of membrane-electrode assemblies using the composite membrane and electrode is higher than that of a MEA using commercial Nafion 111 membrane under non-humidified conditions. (c) 2007 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV EXTERNAL HUMIDIFICATION SELF-HUMIDIFICATION WATER MANAGEMENT GAS-CROSSOVER PEMFC SUPPRESSION PERFORMANCE PARTICLES Operation of a proton exchange membrane fuel cell under non-humidified conditions using a membrane-electrode assemblies with composite membrane and electrode Article 10.1016/j.jpowsour.2007.02.047 1 JOURNAL OF POWER SOURCES, v.167, no.2, pp.325 - 329 JOURNAL OF POWER SOURCES 167 2 325 329 scie scopus 000246542800014 2-s2.0-34147118684 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article EXTERNAL HUMIDIFICATION SELF-HUMIDIFICATION WATER MANAGEMENT GAS-CROSSOVER PEMFC SUPPRESSION PERFORMANCE PARTICLES composite membrane and electrode membrane-electrode assembly non-humidified operation polymer electrolyte membrane fuel cell silica water retention