电沉积Ni-W-P合金上析氢行为的研究

Electrothemical Behaviors of Hydrogen Evolution on Ni-W-P Alloy Electrode

在１ｍｏｌ／Ｌ的ＫＯＨ水溶液中，以电沉积法制备的Ｎｉ－Ｃｏ－Ｐ、Ｎｉ－Ｗ－Ｐ合金为阴极，测量析氢时的极化曲线，结果表明：与Ｎｉ电极相比，Ｎｉ－Ｗ－Ｐ合金电极上氢析出的电势正移２００多毫伏，即Ｎｉ－Ｗ－Ｐ合金电极具有较高的析氢电催化活性。通过ＳＥＭ和ＸＰＳ分析探讨了Ｎｉ电极中引入Ｗ和Ｐ元素对析氢催化活性的影响。

Electrochemical behaviors of hydrogen evolution on Ni, Ni-Co-P and Ni-W-P alloy electrodes were studied with cathodic polarization curves in 1 mol· L-1 potassium hydroxide solution. It showed that Ni-W-P alloy electrode had higher electrocatalytic acticcity for hydrogen evolution. The affect of tungsten and phosphorus on the electmchemical catalytie behaviors of hydrogen evolution were also studied by means of SEM and XPS.