Ni-Sn电极析氢性能研究  

Study on Hydrogen Evolution Performance of Nickel-Tin Electrode

作　　者：常天义 张宝宏 丛文博 骆耀 

机构地区：[1]哈尔滨工程大学化学工程系,黑龙江哈尔滨150001

出　　处：《电化学》2002年第3期343-347,共5页Journal of Electrochemistry

摘　　要：在Fe基底材料上电镀Ni_Sn合金制备低析氢过电位的阴极活性材料 .该材料适用于氯碱工业隔膜型电解槽 ,可达到降低槽压、节能降耗的目的 .在电解槽阴极溶液NaOH 12 0 g/L ,NaCl190 g/L ;温度 90℃ ,阴极极化电流密度i=15 0mA/cm2 的条件下 ,测得其析氢过电位为 88mV .X射线衍射分析表明 ,该种材料与传统装饰用Ni_Sn合金的结构状态有所不同 .采用循环伏安法对Fe电极和Ni_Sn合金电极进行分析 ,可初步判断Ni_Sn合金对氢的吸附较弱 。The cathode active material with low hydrogen evolution overvoltage was prepared by electroplating Ni_Sn alloy on the ferrous basic body.This kind of material can be applied in the diaphragm type of electrolytic tank to decrease cell voltage and save energy.On the condition according with cathode solution in the electrolytic tank(NaOH 120 g/L,NaCl 190 g/L,90 ℃, i =150 mA/cm 2),the overvoltage of hydrogen evolution was 88 mV.By the X_ray diffraction analysis,it was found that the structure of this kind of material was different from that of Ni_Sn alloy applied in traditional decoration.By using CV method to analyse the Fe electrode and Ni_Sn alloy electrode,it was primarily concluded that Ni_Sn alloy absorbed hydrogen weaker then Fe and favored to the reaction of hydrogen evolution.

关 键 词：合金电镀 氯碱工业 Ni-Sn合金 电解槽 镍锡合金 合金电极 

分 类 号：TQ151.2[化学工程—电化学工业]