Ni-Mo-Co合金电极的制备和析氢性能研究  

Preparation and Catalytic Property of Ni-Mo-Co Alloy Electrode for Hydrogen Evolution

作　　者：魏海兴[1] 周振芳[1] 马强[1] 吕东方[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所

出　　处：《舰船防化》2011年第3期24-28,共5页

摘　　要：采用电沉积法制备出了高催化活性的Ni-Mo和Ni—Mo．Co合金电极，在30％（wt）的KOH溶液中的阴极极化曲线表明，Ni-Mo-Co合金电极具有更低的析氢过电位。分别采用SEM、EDXTLXRD等表征手段比较分析了Ni—Mo和Ni—Mo-Co合金电极。结果表明：Co元素的添加增大了对Mo元素的诱导作用，提高了镀层中Mo元素的含量，且其镀层晶粒更加细小，呈现了一种纳米晶态的特征，这些都是三元Ni—Mo—Co合金电极电催化析氢性能更好的原因。The Ni-Mo and Ni-Mo-Co alloy deposits were obtained by electroplating method. The polarization curves in 30% KOII solution indicated that the Ni-Mo-Co alloy had a lower over-potential. The alloy coatings were investigated by SEM, EDX and XRD technique. It showed that the Co element induced the depositing of Mo element and improved the content of Mo. The crystal size was smaller and the structure of the alloy was nanocrystalline. These just indicated why the character of hydrogen evolution reaction （HER） was better.

关 键 词：Ni-Mo合金 Ni—Mo-Co合金 析氢反应 过电位 

分 类 号：O646.54[理学—物理化学]