期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 35, 期 19, 页码 10087-10093出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2010.07.172
关键词
Pd-Ag/C; Methanol oxidation; Fuel cell; Electrocatalysts; Carbon nanotubes
资金
- Center of Advanced Bionanosystems in Nanyang Technological University
Carbon black supported bimetallic palladium silver (Pd-Ag/C) catalysts with different Ag loadings were prepared by borohydride reduction of mixed metal salts and carbon support. Electrochemical activities of these catalysts towards methanol oxidation in alkaline media were examined and the Pd-Ag(1:1)/C catalyst (onset potential of -0.59 V) shows better catalytic activity than the Pd/C catalyst (onset potential of -0.49 V). The addition of Ag also facilitates methanol oxidation and removal of the adsorbed CO. The synthesized activated carbon nanotubes (CNTs)-supported Pd-Ag(1:1) catalyst exhibits even better catalytic activity contributed from larger electroactive surface area and better intrinsic catalytic activity than the carbon black supported bimetallic palladium silver (Pd-Ag/C) catalyst. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
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