Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 162, Issue 1, Pages H79-H85Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.1031501jes
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Funding
- National Natural Science Foundation of China [21163018, 21363022, 51362027]
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One-pot synthesis of Fe/Fe3C particles embeded within nitrogen-doped nanotube composite (Fe-C) is achieved by pyrolyzing a mixture of melamine and iron (III) chloride. PtSn alloys with atomic ratios of 3: 1, 1: 1, and 1: 3 supported on Fe-C are formed using an ethylene glycol reduction method. PtSn alloys exhibit a wire-like morphology when supported on Fe-C (PtSn/Fe-C) as opposed to spherical morphology of PtSn nanoparticles formed on commercial carbon nanotubes (CNTs). The length of the PtSn nanowires is inversely proportional to the Pt:Sn atomic ratio. All three PtSn/Fe-C catalysts have higher ethanol oxidation activity and durability than the PtSn/CNT catalyst, and the highest activity is produced by a 1: 1 Pt:Sn ratio. We conclude that Fe/Fe3C particles embedded within the N-doped carbon composite offers a promising PtSn suppport for direct ethanol fuel cells. (C) 2014 The Electrochemical Society. All rights reserved.
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