期刊
JOURNAL OF POWER SOURCES
卷 185, 期 2, 页码 941-945出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2008.07.044
关键词
Catalyst; Fuel cell; Oxygen reduction reaction; Pd-WO3/C; Hydrogen tungsten bronze
资金
- State Key Fundamental Research Program of China [G2000026408]
- State Key High Technology Research Program of China [2001AA323060]
- Nature Science Foundation of China [20373068, 20433060]
Pd nanoparticles supported on WO3/C hybrid material have been developed as the catalyst for the oxygen reduction reaction (ORR) in direct methanol fuel cells. The resultant Pd-WO3/C catalyst has an ORR activity comparable to the commercial Pt/C catalyst and a higher activity than the Pd/C catalyst prepared with the same method. Based on the physical and electrochemical characterizations, the improvement in the catalytic performance may be attributed to the small particle sizes and uniform dispersion of Pd on the WO3/C, the strong interaction between Pd and WO3 and the formation of hydrogen tungsten bronze which effectively promote the direct 4-electron pathway of the ORR at Pd. (c) 2008 Elsevier B.V. All rights reserved.
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