Abstract
CeO 2/C used in this study was prepared by a solid-state reaction under the microwave irradiation. The activities of Pt/C, Pt/-CeO 2/C for electrochemical oxidation of ethanol were studied in 1.0 M KOH solution by cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopy (EIS). The results showed that the composite of Pt-CeO 2/C gave the better performance than Pt/C. The influence of the amount of the addition of CeO 2 on the catalytic activity of alcohols oxidation on platinum electrode in alkaline solution was tested. The electrode with the weight ratio of Pt to CeO 2 of 2:1 with a platinum loading of 0.30 mg cm −2 showed the highest electro-catalytic activity.
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