Platinum-polyaniline-modified carbon fiber electrode for the electrooxidation of methanol

稀有金属（英文版）, 2005, 24(1): 33-36.

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1.Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China;Department of Chemistry, Hebei Normal University, Shijiazhuang 050016, China

2.Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China

3.Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China

4.Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China

基金项目: 国家自然科学基金(50074003 and 50274010) 国家高技术研究发展计划(863计划)

Platinum-polyaniline-modified carbon fiber electrode for the electrooxidation of methanol

Keywords： physical chemistry

Platinum was electrodeposited onto a polyaniline-modified carbon fiber electrode by the cyclic voltammetric method in sulfuric acid, which may enable an increase in the level of platinum u tilization currently achieved in electrocatalyric systems. This electrode preparation consists of a two-step procedure: first electropolymerization of aniline onto carbon fiber and then electrodeposition of platinum. The catalytic activity of the platinum-polyaniline-modified carbon fiber electrode (Pt/PAni/C) was compared with that of a bare carbon fiber electrode (Pt/C) by the oxidation of methanol. The maximum oxidation current of methanol on Pt/PAni/C is 50.7 mA.cm-2, which is 6.7 times higher than 7.6 mA.cm-2 on the Pt/C.Scanning electron microscopy was used to investigate the dispersion of the platinum particles of about 0.4 μm.

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Platinum-polyaniline-modified carbon fiber electrode for the electrooxidation of methanol

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