Performance of Pt-Ru/C Catalysts Doped with W, Ni and Sn for Electrocatalytic Oxidation of Methanol in Alkaline Media

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (11): 2618.

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Performance of Pt-Ru/C Catalysts Doped with W, Ni and Sn for Electrocatalytic Oxidation of Methanol in Alkaline Media

DUAN Dong-Hong, ZHANG Zhong-Lin, ZHANG Tao, LIU Shi-Bin*, HAO Xiao-Gang, LI Yi-Bing

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Received:2011-01-18 Revised:2011-04-28 Online:2011-11-10 Published:2011-10-14
Contact: LIU Shi-Bin E-mail:sbliu@tyut.edu.cn
Supported by:
国家自然科学基金(批准号: 20676088)和教育部博士点基金(批准号: 20091402110009)资助.

Abstract

Abstract: The catalysts of Pt-Ru-M/C(M=W, Ni, Sn) with different atom ratio were prepared by colloidal method. The surface composition and crystal structure of nano-particle supported by carbon black were characterized by X-ray diffraction and X-ray photoelectron spectroscopy. The catalyst activity in different methanol and NaOH concentration electrolytes was measured by cyclic voltammeter. The results show that the perfor-mance of methanol electro-oxidation on the Pt-Ru/C catalysts can be improved markedly by doping with Ni and W, and be reduced by doping with Sn, and the peak current density on Pt5-Ru4-Ni0.7/C reaches 835.2 mA/mg and the onset potential of methanol electro-oxidation is 0.11 V lower than that of Pt5-Ru5/C in 1.0 mol/L NaOH+1.0 mol/L CH3OH.

Key words: Alkline media, Methanol, Electro-oxidation, Pt-based alloy, Activity

CLC Number:

O646
TM91

TrendMD:

DUAN Dong-Hong, ZHANG Zhong-Lin, ZHANG Tao, LIU Shi-Bin*, HAO Xiao-Gang, LI Yi-Bing. Performance of Pt-Ru/C Catalysts Doped with W, Ni and Sn for Electrocatalytic Oxidation of Methanol in Alkaline Media[J]. Chem. J. Chinese Universities, 2011, 32(11): 2618.

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Performance of Pt-Ru/C Catalysts Doped with W, Ni and Sn for Electrocatalytic Oxidation of Methanol in Alkaline Media

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