钴钨复合电极在碱性介质中的电催化析氢性能

Electrochemical Catalyzed Hydrogen Evolutionof Cobalt- Tungsten Composite Electrode in Alkaline Media

为提高电极的电催化析氢性能，在钻电沉积中加入钨粉，制得钻钨复合电极。采用阴极极化曲线法、交流阻抗技术和扫描电子显微技术研究了电极在碱性介质中的催化析氢性能。与钻电极相比，钻钨复合电极表面粗糙，具有较大的交换电流密度和较小的析氢反应电阻。结果表明：复合电极的电催化析氢性能优于钻电极。

The aim of the study was to improve the electmehemical catalyzed hydrogen evolution of cobalt electrode. Cobalt - tungsten compeite electrode was developed, and its propertyof electrochemical catalyzed hydrogen evolution has been studied by means of cathodic polarization curves, a. c. impedance technique and SEM. Compared with cobalt electrode , Cobalt tungsten electrode has rough surface, high exchange current density and smaller resistance ofhydrogen evolution reaction. The results show that Co - W electrode is superior to cobalt electrode in electrochemical catalyzed hydrrogen evolution.