Ternary Pt45Ru45M10/C (M=Mn, Mo and W) catalysts for methanol and ethanol electro-oxidation

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Ternary Pt45Ru45Mn10/C, Pt45Ru45Mo10/C and Pt45Ru45W10/C catalysts were synthesized and physical and electrochemical properties were characterized. Particle sizes of the catalysts were determined by X-ray diffraction to be 3.9, 4.8 and 4.6 nm for the Mn, Mo and W incorporated catalysts, respectively. Electrochemically active surface areas were calculated from CO stripping results, which were 17.7, 17.2 and 15.7 m(2)/g (catal) for the Pt45Ru45Mn10/C, Pt45Ru45Mo10/C and Pt45Ru45W10/C catalysts, respectively. In methanol electro-oxidation, the Pt45Ru45W10/C catalyst showed highest mass and specific activities of 2.78 A/g (cat.) and 177 mA/m(2), respectively, which were 22 and 100% higher than those of commercial PtRu/C. In the case of ethanol electro-oxidation, the Pt45Ru45Mo10/C catalyst exhibited highest mass and specific activities of 4.8 A/g (catal) and 280 mA/m(2), respectively. Specific activity of the Pt45Ru45Mo10/C catalyst was 56% higher than that of the commercial PtRu/C.
Publisher
KOREAN INST CHEM ENGINEERS
Issue Date
2009-07
Language
English
Article Type
Article
Keywords

MEMBRANE FUEL-CELLS; ANODE ELECTROCATALYSTS; ELECTRONIC-STRUCTURE; CO-TOLERANCE; ACID-MEDIUM; OXIDATION; PERFORMANCE; NI; TRANSITION; RUTHENIUM

Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.26, no.4, pp.1028 - 1033

ISSN
0256-1115
DOI
10.2478/s11814-009-0171-1
URI
http://hdl.handle.net/10203/99594
Appears in Collection
CBE-Journal Papers(저널논문)
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