Preparation of PtSn/C-Rh and PtSn/C-CeO₂ for Ethanol Electro-Oxidation

摘要

PtSn/CeO2 electrocatalyst and PtSn/Rh-C were prepared in a two step. In the first step a CarbonVulcan XC72 + 15%CeO2 and Vulcan XC72 + 15%Rh supports were prepared using a modifiedpolymeric precursor method under controlled synthesis conditions. In the second step PtSnelectrocatalyst was prepared by an alcohol-reduction process using ethylene glycol as solvent andreducing agent and supported on Vulcan XC72 + 15%CeO2 and Vulcan XC72 + 15%Rh. The obtainedelectrocatalysts were characterized by XRD and cyclic voltammetry. The electro-oxidation of ethanolwas studied by cyclic voltammetry and chronoamperometry at room temperature. PtSn(50:50)/CeO2electrocatalyst showed a significant increase of performance for ethanol oxidation compared to PtSn/Ccatalyst and others electrocatalysts prepared.