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Open AccessArticle

Synthesis and Electrocatalytic Performance of Multi-Component Nanoporous PtRuCuW Alloy for Direct Methanol Fuel Cells

1
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, China
2
Laboratory for Microstructures, Shanghai University, 99 Shangda Road, Shanghai 200436, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Minhua Shao
Catalysts 2015, 5(3), 1003-1015; https://doi.org/10.3390/catal5031003
Received: 28 April 2015 / Revised: 27 May 2015 / Accepted: 16 June 2015 / Published: 24 June 2015
(This article belongs to the Special Issue Electrocatalysis in Fuel Cells)
We have prepared a multi-component nanoporous PtRuCuW (np-PtRuCuW) electrocatalyst via a combined chemical dealloying and mechanical alloying process. The X-ray diffraction (XRD), transmission electron microscopy (TEM) and electrochemical measurements have been applied to characterize the microstructure and electrocatalytic activities of the np-PtRuCuW. The np-PtRuCuW catalyst has a unique three-dimensional bi-continuous ligament structure and the length scale is 2.0 ± 0.3 nm. The np-PtRuCuW catalyst shows a relatively high level of activity normalized to mass (467.1 mA mgPt1) and electrochemically active surface area (1.8 mA cm2) compared to the state-of-the-art commercial PtC and PtRu catalyst at anode. Although the CO stripping peak of np-PtRuCuW 0.47 V (vs. saturated calomel electrode, SCE) is more positive than PtRu, there is a 200 mV negative shift compared to PtC (0.67 V vs. SCE). In addition, the half-wave potential and specific activity towards oxygen reduction of np-PtRuCuW are 0.877 V (vs. reversible hydrogen electrode, RHE) and 0.26 mA cm−2, indicating a great enhancement towards oxygen reduction than the commercial PtC. View Full-Text
Keywords: direct methanol fuel cells; methanol oxidation; oxygen reduction reaction; dealloying; nanoporous alloys direct methanol fuel cells; methanol oxidation; oxygen reduction reaction; dealloying; nanoporous alloys
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MDPI and ACS Style

Chen, X.; Wang, H.; Wang, Y.; Bai, Q.; Gao, Y.; Zhang, Z. Synthesis and Electrocatalytic Performance of Multi-Component Nanoporous PtRuCuW Alloy for Direct Methanol Fuel Cells. Catalysts 2015, 5, 1003-1015.

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