Article ID Journal Published Year Pages File Type
221001 Journal of Electroanalytical Chemistry 2007 17 Pages PDF
Abstract

Electroless nickel–phosphorous coated carbon steel electrodes, with P content ranging from 4.0 to 13.8 at.% P, were prepared and employed to investigate the effect of the structural and morphological features on the alloy electrocatalytic activity. Subsequent heat (400 °C, 1 h) or electrochemical (anodizing at 0.5 V followed by multi-cycle polarization) treatments were performed and the so imparted modifications established. The deposits characterization by glazing X-ray diffraction and by atomic force microscopy provided information on the conditions for the formation of crystallites in amorphous films and its influence on the surface topography; the comparative analysis of the cyclic voltammetry data gave information on the importance of the P content in nickel hydroxides/oxides formation. The possibility of using the as-deposited or the treated electroless Ni–P coatings as cathodes, in alkaline media, was evaluated with the study of the hydrogen evolution reaction.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
Authors
, ,