Abstract
Ni-TiO2 composite coatings were electrodeposited from the Watts electrolyte under different operating conditions. Chemical and phase composition, surface topography and roughness of composite coatings were investigated by X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), atom force microscopy (AFM). It was found that increasing current density and temperature results in more incorporation of TiO2 into nickel. The estimated percentage of a dispersed phase in coatings reaches 12–14 wt%. Ni-TiO2 composite coatings electrodeposited under lower current density and temperature differ in surface topography, in particular, they have a globular morphology. The results of cyclic voltammetric measurements indicate that Ni-TiO2 composite coatings showed higher electrocatalytic activity towards the oxidation of methanol compared to the pure Ni coatings.Selection and peer-review under responsibility of the scientific committee of 4th ISE Satellite Student Regional Symposium on Electrochemistry in Ukraine.
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