Abstract
NiZnS electrode has been investigated for use in oxygen evolution reaction in alkaline media. Nickel mesh electrode was coated with the ternary composition of NiZnS by four methods, viz., direct current electrodeposition, pulse electrodeposition, sonoassisted direct current electrodeposition and sonoassisted pulse electrodeposition. The oxygen evolution studies carried out using these electrodes resulted in higher current density for the electrode prepared by sonoassisted pulse electrodeposition compared to those prepared by other methods. Effect of plating current density, pulse duty cycle and temperature on the electrochemical parameters of the alloy coating has been studied. Surface morphologies of the various coating were studied using scanning electron microscopy. Long-term stability of the electrodes prepared was studied in alkaline medium. Exchange current density (jo) was found to increase with the increase in temperature and was the highest for sonoassisted pulse electrodeposited electrode.
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