Cho, Jae Hyung Kim, Jang Mi Prabhuram, Joghee Hwang, Sang Youp Ahn, Dong June Ha, Heung Yong Kim, Soo-Kil 2024-01-20T22:01:20Z 2024-01-20T22:01:20Z 2021-09-01 2009-02-15 0378-7753 https://pubs.kist.re.kr/handle/201004/132739 In this study, a low-temperature decal transfer method is used to fabricate membrane electrode assemblies (MEAs) and the MEAs are tested for application in a direct methanol fuel cell (DMFC). The low-temperature decal transfer uses a carbon-layered decal substrate with a structure of ionomer/catalyst/carbon/substrate to facilitate the transfer of catalyst layers from the decal substrates to the membranes at a temperature as low as 140 degrees C, and also to prevent the formation of ionomer skin layer that is known to be formed on the surface of the transferred catalyst layer. The DMFC performance of the MEA (with carbon layer) fabricated by the low-temperature decal transfer method is higher than those of MEAs fabricated by the same method without a carbon layer, a conventional high-temperature decal method, and a direct spray-coating method. The improved DMFC performance of the MEA fabricated with carbon layer by the low-temperature decal transfer method can be attributed to the absence of an ionomer skin on the catalyst layer, which can streamline the diffusion of reactants. Furthermore, the intrinsic properties of the MEA fabricated by the low-temperature decal transfer method are elucidated by field-emission scanning electron microscopy (FESEM). electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) techniques, and cathode CO2 analysis. (C) 2008 Elsevier B.V. All rights reserved. English ELSEVIER MEA PREPARATION PERFORMANCE LAYER CROSSOVER DMFC Fabrication and evaluation of membrane electrode assemblies by low-temperature decal methods for direct methanol fuel cells Article 10.1016/j.jpowsour.2008.10.111 1 JOURNAL OF POWER SOURCES, v.187, no.2, pp.378 - 386 JOURNAL OF POWER SOURCES 187 2 378 386 scie scopus 000263694900013 2-s2.0-58949088462 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article MEA PREPARATION PERFORMANCE LAYER CROSSOVER DMFC Direct methanol fuel cell Membrane electrode assembly Low-temperature decal Carbon Ionomer skin