Nanostructured (100-x)% Pd -x % Ni (x = 1, 2, 5, 10, and 20) and (90 – y)%Pd-10%Ni-y%C (y = 0.5, 1, 2, 5,
and 10) composite films are obtained on glassy carbon electrodes and characterized by XRD, TEM, cyclic voltammetry
and chronoamperometric techniques for use as electrocatalysts towards methanol, ethanol, ethylene glycol and glycerol
oxidations in 1 M KOH at 25°C. Results show that addition of Ni from 1 to 20% to the pure Pd electrode increases the
electrocatalytic activity for electrooxidation of each alcohol showing maximum with 10% Ni. Further, all the Pd-Ni
composite electrodes exhibit better electrocatalytic performance in the case of ethanol electrooxidation. The rate of
electrooxidation of different alcohols on the active 90%Pd-10 % Ni electrode at E = -0.20 V in 1 M KOH is observed to
follow the order: ethanol > methanol> ethylene glycol > glycerol. Incorporation of C from 0.5 to 10% to the active Pd-
10% Ni composite improves the electrocatalytic performance of the electrode further, the magnitude of improvement
being greatest with 5%C. The apparent electrocatalytic activity of the active 90%Pd-10%Ni electrode at E = -0.20 V is
enhanced ~ 1.3 to 2.1 times with introduction of 5%C.
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