Mesocarbon microbeads supported PtSn catalysts for electrochemical oxidation of ethanol
- 147 Downloads
Mesocarbon microbeads (MCMB) supported PtSn catalysts were prepared by alcohol reduction method and characterized by XRD, FESEM and EDX. XRD results show that the addition of Sn to Pt/MCMB extends the fcc lattice parameters of platinum and the particle size of PtSn/MCMB is about 2.6 nm, smaller than that of Pt/MCMB. The electrode catalytic activity in the electro-oxidation of ethanol was studied by cyclic voltammetry, Tafel plot, electrochemistry impedance spectra (EIS) and chronoamperometry. All the results showed that PtSn/MCMB gave higher catalytic activity for ethanol electro-oxidation than Pt/C (20 wt.% E-TEK).
KeywordsSaturated Calomel Electrode Electrochemistry Impedance Spectrum Gold Foil Direct Ethanol Fuel Cell Direct Alcohol Fuel Cell
The authors appreciate the financial support of the State Key Basic Research Program of PRC (2002CB211803) and National Natural Science Foundation of China (90410002).