标题:Dispersing Pt atoms onto nanoporous gold for high performance direct formic acid fuel cells
作者:Wang, Rongyue ;Liu, Jianguo ;Liu, Pan ;Bi, Xuanxuan ;Yan, Xiuling ;Wang, Wenxin ;Ge, Xingbo ;Chen, Mingwei ;Ding, Yi
作者机构:[Liu, Jianguo ] Eco-Materials and Renewable Energy Research Center, Department of Materials Science and Engineering, Nanjing University, Nanjing 21009 更多
通讯作者:Liu, J
来源:Chemical Science
出版年:2013
卷:5
期:1
页码:403-409
DOI:10.1039/c3sc52792a
摘要:Direct formic acid fuel cells (DFAFCs) are promising portable energy conversion devices for supplying our off-grid energy demands. However, traditional Pt-based catalysts suffer from poor performance; consequently the precious metal loading in an actual fuel cell has to be maintained at a very high value, typically orders of magnitude higher than the acceptable level. Through a molecular self-assembly/electro-deposition process, Pt atoms are effectively dispersed onto the surface of a nanoporous gold substrate, and the resulting nanocomposites demonstrate superior electrocatalytic performance toward formic acid electro-oxidation, which can be attributed to a nearly ideal catalyst configuration where all the Pt atoms are involved in a highly desired direct reaction path. In both half-cell electrochemical testing and actual DFAFCs, these rationally designed electrodes show over two orders of magnitude improvement in Pt efficiency, as compared with the state-of-the-art Pt/C catalyst. This design strategy allows customized development of new generation electrocatalysts for high performance energy saving technologies. © 2013 The Royal Society of Chemistry.
收录类别:EI
资源类型:期刊论文
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