摘要
利用循环伏安、恒电位阴极极化和动电位线性扫描等测试手段,研究了向 6mol/LKOH(ZnO饱和 )水溶液中加入酒石酸钾对锌电极电化学性能的影响。结果表明,添加酒石酸钾后,不仅可以增大锌电极的析氢过电位,减小腐蚀电流密度,而且可有效抑制锌枝晶的形成,其中以w(酒石酸钾) =2%为最优,恒电位阴极极化电流由未加时的 927. 7mA降为 72. 2mA。
The influence of potassium tartrate,added in 6mol/L KOH solution(saturated with ZnO),on electrochemical properties of zinc electrode was investigated by means of cyclic voltammetry,potentiostatic and linear polarization techniques.The results show that potassium tartrate not only increases overpotential of hydrogen evolution and decreases corrosion current density of zinc electrode,but also prevents dendrite from forming on zinc electrode surface remarkably.The optimum weight fraction of added potassium tartrate is 2%,which can reduce the polar current under 0.1 V cathodal overpotential from 927.7 mA to 72.2 mA.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2005年第3期215-217,共3页
Fine Chemicals
关键词
酒石酸钾
锌电极
电化学性能
zinc electrode
potassium tartrate
electrochemical performance
