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http://dx.doi.org/10.5229/JKES.2004.7.4.201

Electrochemical Characteristics on Methanol Oxidation of Pt-Ru/PPy/Nafion Composite Electrode  

Cho Seung-Koo (Department of Chemistry, Sangji University)
Park Jong-Ho (Department of Chemical Engineering, Yonsei University)
Publication Information
Journal of the Korean Electrochemical Society / v.7, no.4, 2004 , pp. 201-205 More about this Journal
Abstract
The Pt-Ru electrocatalyst was Prepared on Nafion membrane modified with Polypyrrole by chemical reduction of $H_2PtCI_6\;and\;RuCl_3$ solution ai precursor. From the electron dispersive microanalysis spectroscope(EDS), the Pt-Ru catalyst was located on the surface of Ppy/Nafion composite. The electrochemical oxidation of methanol on Pt-Ru catalyst deposited in Polypyrrole-impregnated Nafion was investigated by cyclic voltammetry (CV) and chronoamperometry. The onset potential of methanol oxidation was shifted to negative potential as the $RuCI_3$ concentration in deposition solution. Also, it was known that the Pt-Ru binary catalyst on Nafion could be directly deposited by using Polypyrrole and resulting Pt-Ru/PPy/Nafion was available for methanol oxidation.
Keywords
Polypyrrole; PPy/Nafion composite; Pt-Ru/PPy/Nafion electrode; methanol oxidation;
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