期刊
JOURNAL OF POWER SOURCES
卷 241, 期 -, 页码 274-280出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.04.104
关键词
Carbon nanotubes; Catalyst; Methanol oxidation; Fuel cells; Platinum
资金
- National Natural Science Foundation of China [10974131, 51202137, 61240054, 11274222]
Single-wall carbon nanotubes (SWCNTs) supported Pt-Fe nanoparticles have been prepared by one-step hydrogen arc discharge evaporation of carbon electrode containing both Pt and Fe metal elements. The formation of SWCNTs and Pt Fe nanoparticles occur simultaneously during the evaporation process. High-temperature hydrogen treatment and hydrochloric acid soaking have been carried out to purify and activate those materials in order to obtain a new type of Pt Fe/SWCNTs catalyst for methanol oxidation. The Pt Fe/SWCNTs catalyst performs much higher electrocatalytic activity for methanol oxidation, better stability and better durability than a commercial Pt/C catalyst according to the electrochemical measurements, indicating that it has a great potential for applications in direct methanol fuel cells. (C) 2013 Elsevier B.V. All rights reserved.
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