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应用循环伏安法研究了Pb - 0 .5at %Ca - 1 .5at %Sn和含Ce的Pb - 0 .5at%Ca - 1 .5at%Sn合金电极在 4.5mol·dm- 3H2 SO4溶液中和 0 .6～ 1 .4V(vs .Hg/Hg2 SO4电极 )电位范围内的电化学特性 ,并采用线性电位扫描法和交流伏安法分别研究了上述合金在相同溶液中以 0 .9V(vs .Hg/Hg2 SO4电极 )生长的阳极Pb(Ⅱ )膜增长率和膜的阻抗实数部分 (Z’)变化 .结果表明 ,在铅合金中添加Ce对阳极Pb(Ⅱ )膜的生长有显著的抑制作用并降低铅阳极膜的Z’ .以上述两种合金作为正极板栅制作的铅蓄电池 ,含Ce的Pb Ca Sn合金的深充放循环性能明显优于Pb Ca Sn合金 .
The cyclic voltammetry was used to study the effect of Pb - 0.5at% Ca - 1.5at% Sn and Ce - containing Pb - 0.5at% Ca - 1.5at% Sn alloy electrode in 4.5mol · dm - 3H2SO4 solution 0 .6 ~ 1 .4V (vs. Hg / Hg2 SO4 electrode) potential range of the electrochemical properties, and the use of linear potential sweep and AC voltammetry were studied in the same solution of the alloy at 0 .9V (vs The growth rate of the anode Pb (Ⅱ) film and the real part of the impedance of the film (Z ’) varied with the growth of Hg / Hg2 SO4 electrode.The results showed that Ce Inhibition and reduce the lead anode film Z ’.Through the above two alloys as a positive grid made of lead-acid batteries, Ce-containing Pb Ca Sn alloy deep charge-discharge cycle performance significantly better than the Pb Ca Sn alloy.