锌粉在碱性介质中的析氢行为

通过析氢量测试研究了三种不同来源的锌粉在碱性锌电池电解质（ＫＯＨ溶液）中的动态析氢行为以及电解质浓度和两种有机抑制剂及一种无机抑制剂对析氢行为的影响，对锌粉在碱性介质中的析氢动力学进行了讨论。针对析氢反应的特性，选择的无机析氢抑制剂包含的主要成分为能与锌作用后形成高氢过电位合金薄层的无机化合物和助溶剂，因而可以减缓锌电极上析氢反应的阴极过程或提高阴极反应的位垒；而有机析氢抑制剂的主要成分为能在锌表面形成极薄吸附保护层的表面活性剂，它能有效地抑制锌电极上析氢反应的阳极过程或提高阳极反应的位垒。实验结果表明：所用析氢抑制剂的抑制效率可以达到大约１３％。同时还提出了筛选应用于干电池中的析氢抑制剂的基本思想。

Study on behavior of exhaustion hydrogen from zinc powder in alkaline solution

Dynamic behavior of exhaustion hydrogen of zinc powder in KOH alkaline solution and the effects of the solution concentration and inhibitors on the behavior have been investigated by measuring volume of evolved hydrogen.The inhibitors can form a thin film with high hydrogen overpotential or restraint anodic process when they react with zinc.Dynamics of exiting hydrogen of zinc powder in the solution has also been discussed.Obtained results indicated that restraining efficiency for hydrogen evolution with selected inhibitors could reach about 13%.Basic idea for selecting hydrogen exhaustion inhibitors which was applied in dry battery was proposed in this paper.