Synthesis and Characterization of Cu-Pt/MWCNTs in Electrocatalytic Application

• Main Authors: Hang-Jui Hsu, 許航睿
• Other Authors: Hong-Ming Lin
• Format: Others
• Language: en_US
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/02278080195299634316

碩士 === 大同大學 === 材料工程學系(所) === 98 === In this study, the multi-walled carbon nanotubes (MWCNTs) with high thermal conductivity and surface area are used as a supporter of Pt and bimetallic Cu-Pt nanocomposite, which are catalysts for anode material in fuel cell. Cu-Pt nanocomposite with different ratios of Cu and Pt are synthesized on MWCNTs by polyol method. The structures and morphologies of nano hybrid catalysts are analyzed by XRD, FESEM and TEM. According to the XRD patterns of Cu-Pt/MWCNTs, Pt and Cu form the solid solution structure, by polyol process, the average diameters of Pt and Cu-Pt nanoparticles on MWCNTs can be controlled within 3-10 nm and 5-15 nm, respectively. The electrocatalytic behavior during methanol oxidation reactions have been investigated by Cyclic Voltammetry (CV). According to the results the methanol electrooxidation activity of Pt/MWCNTs is higher than that of Pt/carbon black but lower than that of Cu-Pt/MWCNTs. The enhancement of the methanol oxidation activity of Cu-Pt/MWCNTs may relate to the bimetal structure and the interaction between Cu and Pt., the performance of Cu-Pt/MWCNTs system in electro catalysis reaction is 100% higher than Pt/MWCNTs system. In indicates that added Cu improves dramatically on the performance of Pt/MWCNTs catalysts in electrocatalytic reaction.