期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 24, 页码 10249-10254出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.05.019
关键词
Fuel cell; Graphene; Annealing; CO tolerance
资金
- National Natural Science Foundation of China [51406057]
- RGC/SFC Hong Kong-Scotland Collaborative Research Program [X-HKU710/14, H15009]
A new oxygen-annealing treatment for Pd supported on graphene was employed to enhance the electro-catalytic performance in formic acid microfluidic fuel cells. Experiments show that both the electro-oxidation reactivity and CO tolerance of the annealed catalyst are significantly improved. When testing the fuel cell, the maximum power density with annealed catalyst is 41% higher than the unannealed Pd@graphene catalyst, and 85% higher than Pd@Vulcan XC-72. This enhancement is attributed to the Pd-O bond formation during the oxygen annealing step, which induces greater CO electro-oxidation reactivity. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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