化学
循环伏安法
电化学
镍
微晶
极化(电化学)
无定形固体
合金
电催化剂
化学工程
阳极氧化
玻璃碳
冶金
电极
无机化学
材料科学
结晶学
有机化学
物理化学
铝
工程类
作者
A. Fundo,L.M. Abrantes
标识
DOI:10.1016/j.jelechem.2006.03.023
摘要
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.
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