Abstract
SnO 2-carbon nanotubes (CNTs) composites were prepared by sol–gel method, and characterized by scanning electron microscopy and X-ray diffraction. Due to high stability in diluted acidic solution, SnO 2-CNTs composites were selected as the catalyst support and second catalyst for ethanol electrooxidation. The electrocatalytic properties of the SnO 2-CNTs supported platinum (Pt) catalyst (Pt/SnO 2-CNTs) for ethanol oxidation have been investigated by typical electrochemical methods. Under the same mass loading of Pt, the Pt/SnO 2-CNTs catalyst shows higher electrocatalytic activity and better long-term cycle stability than Pt/SnO 2 catalyst. Additionally, the effect of the mass ratio of CNTs to SnO 2 on the electrocatalytic activity of the electrode for ethanol oxidation was investigated, and the optimum mass ratio of CNTs to SnO 2 in the Pt/SnO 2-CNTs catalyst is 1/6.3.
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