Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 36, Issue 24, Pages 15775-15782Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.09.019
Keywords
Direct borohydride-hydrogen peroxide fuel cell; Au-Cu/C; Bimetallic nanoparticles; Borohydride oxidation; Anode electrocatalyst
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Funding
- National Natural Science Foundation of China [20871101, 51072173]
- Ministry of Education of China [20094301110005]
- Science and Technology Plan Project of Hunan Province [2010GK3181]
- Hunan Provincial Education Department [11C1207]
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Carbon supported Au-Cu bimetallic nanoparticles are prepared by a modified NaBH4 reduction method in aqueous solution at room temperature. The electrocatalytic activities of the Au-Cu/C catalysts are investigated by cyclic voltammetry, chronoamperometry, chronopotentiometry and fuel cell experiments. It has been found that the Au-Cu/C catalysts have much higher catalytic activity for the direct oxidation of BH4- than Au/C catalyst. Especially, the Au67Cu33/C catalyst presents the highest catalytic activity for BH4- electrooxidation among all as-prepared catalysts, and the DBHFC using Au67Cu33/C anode catalyst and Au/C cathode catalyst shows the maximum power density of 51.8 mW cm(-2) at 69.5 mA cm(-2) and 20 degrees C. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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