Synthesis of an active and stable Pt-shell-Pd-core/C catalyst for the electro-oxidation of methanol
- Authors
- Choi, Insoo; Ahn, Sang Hyun; Kim, Myeong Ho; Kwon, Oh Joong; Kim, Jae Jeong
- Issue Date
- Mar-2014
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Platinum(shell)-Palladium(core); Catalyst; Methanol; Oxidation; Carbon monoxide-poisoning; Direct methanol fuel cell
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.39, no.8, pp 3681 - 3689
- Pages
- 9
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 39
- Number
- 8
- Start Page
- 3681
- End Page
- 3689
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/57503
- DOI
- 10.1016/j.ijhydene.2013.12.118
- ISSN
- 0360-3199
1879-3487
- Abstract
- 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.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/57503)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.