期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 39, 期 24, 页码 12572-12577出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.05.174
关键词
Direct formic acid fuel cell (DFAFC); Formic acid oxidation; Reduced graphene oxide (rGO) support; rGO-NiO nanocomposite
资金
- DST India through SERC Fast Track [SR/FT/CS-103/2011]
- Central Instrumental Facility (CIF) [SERB/1592/2012-13]
The superior catalytic activity along with improved CO tolerance for formic acid electro-oxidation has been demonstrated on a NiO-decorated reduced graphene oxide (rGO) catalyst. The cyclic voltammetry response of rGO-NiO/Pt catalyst elucidates improved CO tolerance and follows direct oxidation pathway. It is probably due to the beneficial effect of residual oxygen groups on rGO support which is supported by FT-IR spectrum. A strong interaction of rGO support with NiO nanoparticles facilitates the removal of CO from the catalyst surface. The chronoamperometric response indicates a higher catalytic activity and stability of rGO-NiO/Pt catalyst than the NiO/Pt and unmodified Pt electrode catalyst for a prolonged time of continuous oxidation of formic acid. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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