Effect of Alloying Extent of Carbon Supported  Pt-Ru Catalyst on Its Electrocatalytic Activity

Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (4): 676.

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Effect of Alloying Extent of Carbon Supported Pt-Ru Catalyst on Its Electrocatalytic Activity

CHEN Yu¹, TANG Ya-Wen¹, WU Wei ², CAO Jie-Ming², LIU Chang-Peng³, XING Wei³, LU Tian-Hong ^1,3*

1. College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, China;
2. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
3. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Received:2005-07-04 Online:2006-04-10 Published:2006-04-10
Contact: LU Tian-Hong,E-mail: tianhonglu@263.net

Abstract

Abstract:

It was found that the carbon supported Pt-Ru catalyst(Pt-Ru/C) with the Pt-Ru particles with high alloying, small average size and low relative crystallinity can be prepared in the aqueous solution with tetrahydrofuran(THF) using NaBH₄ as a reductant for reducing H₂PtCl₆ and RuCl₃at room temperature. The electrocatalytic activity of the Pt-Ru/C catalyst for the methanol oxidation is much higher than that of the commercial E-TEK Pt-Ru/C catalyst with the similar average size and relative crystallinity, but low alloying. It is indicated that the alloying of Pt-Ru could significantly affect the electrocatalytic activity of the Pt-Ru/C catalyst for the methanol oxidation. The Pt-Ru/C catalyst with high alloying can be obtained because THF and H2PtCl6 can form the complex leading to that the reduction potentials of H₂PtCl₆ and RuCl₃ are closed in the aqueous solution with THF.

Key words: Pt-Ru/C catalyst; Tetrahydrofuran; Direct methanol fuel cell; Alloying

CLC Number:

O646

TrendMD:

CHEN Yu, TANG Ya-Wen, WU Wei, CAO Jie-Ming, LIU Chang-Peng, XING Wei, LU Tian-Hong. Effect of Alloying Extent of Carbon Supported Pt-Ru Catalyst on Its Electrocatalytic Activity[J]. Chem. J. Chinese Universities, 2006, 27(4): 676.

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Effect of Alloying Extent of Carbon Supported Pt-Ru Catalyst on Its Electrocatalytic Activity

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