Issue 37, 2009
From the journal:

Journal of Materials Chemistry

Highly efficient Pt–Ru–Co–W quaternary anode catalysts for methanol electrooxidation discovered by combinatorial analysis

Geun Seok Chai†a  and  Jong-Sung Yu*a  

* Corresponding authors

a Department of Advanced Materials Chemistry, BK21 Research Team, Korea University, 208 Seochang, Jochiwon, Republic of Korea
E-mail: jsyu212@korea.ac.kr

Abstract

PtRuCoW quaternary alloy system is explored by a robotic dispenser and combinatorial optical screening method, and some active quaternary electrocatalysts are discovered for methanol oxidation in DMFC. The newly developed PtRuCoW catalysts exhibit superior electrochemical catalytic activity and better electrochemical stability toward methanol oxidation than Pt50–Ru50 binary alloy. A catalyst with Pt43Ru33Co14W10 composition is the most active, demonstrating an enhancement in the activity of ca. 40 ∼ 70% compared with the commercial binary Pt50–Ru50E-TEK catalyst. The enhancement of catalytic activity can be explained by bifunctional mechanism, electronic effect, redox process and cooperative synergic effects of added Co and W metals.

Graphical abstract: Highly efficient Pt–Ru–Co–W quaternary anode catalysts for methanol electrooxidation discovered by combinatorial analysis

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Article information

DOI
https://doi.org/10.1039/B823053F
Article type
Paper
Submitted
23 Dec 2008
Accepted
08 Jun 2009
First published
28 Jul 2009

J. Mater. Chem., 2009,19, 6842-6848

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Highly efficient Pt–Ru–Co–W quaternary anode catalysts for methanol electrooxidation discovered by combinatorial analysis

G. S. Chai and J. Yu, J. Mater. Chem., 2009, 19, 6842 DOI: 10.1039/B823053F

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