Choi, Insoo Ahn, Sang Hyun Kim, Myeong Ho Kwon, Oh Joong Kim, Jae Jeong 2024-01-20T10:04:15Z 2024-01-20T10:04:15Z 2021-09-05 2014-03-06 0360-3199 https://pubs.kist.re.kr/handle/201004/127004 A Pt-shell-Pd-core/C catalyst is prepared via electroless deposition and galvanic displacement. The catalyst is active toward the electro-oxidation of methanol and is more stable against COad-poisoning than a commercial Pt/C catalyst. The stable activity of Pt-shell-Pd-core/C is ascribed to the tuned electronic property of the Pt over-layer in the Pt-shell-Pd-core/C, which leads to weak binding with COad and increases the kinetics of OHad formation. The weakened binding property of the surface Pt with COad and the facile oxidation of COad by OHad were confirmed by a spectroscopic analysis and in a COad-stripping experiment, respectively. The electro-oxidation of COad by Had is the rate-determining step of methanol oxidation. Therefore, the accelerated formation of OHad contributes to the overall oxidation reaction, preventing COad-poisoning. In addition, Pt-shell-Pd-core/C maintains its activity longer than Pt/C does during a prolonged cycle experiment. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD CARBON-MONOXIDE FORMIC-ACID ELECTROCATALYTIC OXIDATION CO OXIDATION FUEL-CELL PLATINUM ETHANOL ELECTRODES MECHANISM PTRU/C Synthesis of an active and stable Pt-shell-Pd-core/C catalyst for the electro-oxidation of methanol Article 10.1016/j.ijhydene.2013.12.118 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.39, no.8, pp.3681 - 3689 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39 8 3681 3689 scie scopus 000332999800010 2-s2.0-84894090486 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article CARBON-MONOXIDE FORMIC-ACID ELECTROCATALYTIC OXIDATION CO OXIDATION FUEL-CELL PLATINUM ETHANOL ELECTRODES MECHANISM PTRU/C Platinum(shell)-Palladium(core) Catalyst Methanol Oxidation Carbon monoxide-poisoning Direct methanol fuel cell