Electrocatalytic Oxidation of Ethanol on Ni-P-TiO_2 Composite Coating Electrodes

The Ni-P-TiO2 composite coating electrodes with different contents of TiO2 particulates were prepared by electroless plating technique from Ni-P plating bath containing TiO2 powders on brass.Cyclic voltammetry,linear sweep voltammetry,chronoamperometry and electrochemical impedance spectroscopy were used to test the electrochemical performance of Ni-P-TiO2/Cu electrodes.It was indicated that the Ni-P-TiO2/Cu electrodes exhibited very strong electrocatalytic activity toward the oxidation of ethanol in alkaline medium at ambient temperature.The electrocatalytic activity of ethanol oxidation on the Ni-P-TiO2 electrodes depended on the amounts of TiO2 in the coatings.The excellent capacity on electrocatalytic oxidation of ethanol was obtained with the electrodes prepared in Ni-P plating bath containing 5 g·L-1 TiO2.