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Ultrasmall PtSn alloy catalyst for ethanol electro-oxidation reaction
- Authors
- Kwak, Da-Hee; Lee, Young-Woo; Han, Sang-Beom; Hwang, Eui-Tak; Park, Han-Chul; Kim, Min-Cheol; Park, Kyung-Won
- Issue Date
- 1-Feb-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- PtSn; Alloy; Nanoparticles; Ethanol; Electro-oxidation
- Citation
- JOURNAL OF POWER SOURCES, v.275, pp.557 - 562
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 275
- Start Page
- 557
- End Page
- 562
- ISSN
- 0378-7753
- Abstract
- To improve the electrocatalytic properties for an ethanol electro-oxidation reaction, modifications of Pt nanocrystallites have been used by alloying with other elements such as Ru, Sn, and Au. Here we demonstrate carbon supported Pt3Sn alloy electrocatalyst (Pt3Sn/C) synthesized using a thermal-decomposition method. The PtSn/C prepared by the present synthetic process shows a homogeneous distribution of ultrasmall alloy nanoparticles (-2.5 nm) in the presence of Pt and Sn metallic states. At 0.45 V, the Pt3Sn/C (0.35 mA cm(-2)) exhibits much higher current density as compared with Pt/C (0.13 mA cm(-2)). In an electrochemical stability test, the Pt3Sn/C supported quite high current density and thus showed 3% current reduction after the stability test. (C) 2014 Elsevier B.V. All rights reserved.
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Related Researcher
- PARK, KYUNG WON
- College of Engineering (Department of Chemical)