A Review of Pd-Based Electrocatalyst for the Ethanol Oxidation Reaction in Alkaline Medium
Direct ethanol fuel cells are considered a promising power source for future portable electronic and automotive applications. This article reviewed the synthetic methods commonly used to prepare Pd-based catalysts for the ethanol electrooxidation in alkaline media. The progress in the mechanism studies of ethanol oxidation reaction (EOR) on Pd electrode in alkaline medium by cyclic voltammetry and electrochemical in situ FTIR spectroscopy was also reviewed. The recent studies revealed that the EOR is fairly complicated, and it is difficult in CC bond cleavage for the complete oxidation of ethanol to CO2, and ethanol is selectively oxidized to acetate on Pd-based catalysts in alkaline media. Overall, what is most important is to explore new Pd-based alloy catalysts with high ability to break the CC bond to promote complete oxidation of ethanol as well as increase the efficiency of DEFCs.
Qunjie Xu, Yongguang Li and Xiu Yang
L. L. Wang et al., "A Review of Pd-Based Electrocatalyst for the Ethanol Oxidation Reaction in Alkaline Medium", Advanced Materials Research, Vols. 860-863, pp. 826-830, 2014