通过电沉积方法获得了Ni--S--Co非晶合金镀层. 电化学测试结果表明, 非晶态Ni--S--Co合金电极的析氢过电位仅为70 mV, 析氢反应的电化学活性高于其它种类的电极(包括非晶态Ni--S合金电极), 计算了电极的电化学参数, 交换电流密度和表观活化能.XRD和SEM测试表明, 在电解过程中, 非晶态Ni--S--Co合金电极的电化学稳定性高于非晶态Ni--S合金电极. 长时间电解实验表明, 非晶态Ni--S--Co合金电极在模拟工业电解条件下具有相当高的活性和稳定性.
The amorphous Ni--S--Co alloy was obtained by electrodeposition method, and the effect of the current density on its structure and the contents of S and Co were measured. The tested results on the electrochemical properties show that the hydrogen evolution reaction overpotential of amorphous Ni--S--Co is only 70 mV and its electrochemical activity is much higher than other electrodes including amorphous Ni--S electrode. Furthermore, the corresponding electrochemical parameters, i.e. the Tafel slope, the exchange current density and the activation energy ,were obtained. The electrochemical stability of amorphous Ni--S--Co alloy is determined to be higher than that of amorphous Ni—S alloy. The high electrochemical activity and stability of amorphous Ni--S--Co electrode is also determined by the long--term electrolysis under the industrial conditions.
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