添加铈对铅钙合金在硫酸溶液中电化学性能的影响

Effect of Cerium Addition On Electrochemical Performances of Pb-Ca Alloy in H_2SO_4

为了改善铅钙合金的耐腐蚀性能和提高铅蓄电池的循环寿命,应用交流阻抗,阳极极化曲线,交流伏安,恒流腐蚀等方法研究了在铅钙锡铝合金中添加铈对合金电化学性能的影响.研究结果表明:铈能提高合金的耐腐蚀能力,添加铈使合金腐蚀膜的阻抗明显降低,有利于缓解早期容量损失(PCL-1)现象,实验电池的循环寿命也明显延长.因此掺铈铅钙合金是一种性能优良的阀控式铅酸电池正极板栅合金材料。

In order to improve corrosion-resistance property of Pb-Ca alloy and increase me cycle life oi lead acid batteries, the effect of Ce addition on electrochemical performances of Pb-Ca-Sn-Al alloy in sulfuric acid solution was investigated by means of AC voltammetry, anodic polarization curve, AC impedance and constant current corrosion. The results show that the corrosion resistance property of Pb-Ca-Sn-Al was improved by Ce, and the impedance of corrosion film on the alloy was also decreased by the cerium addi- tion, which is favorable for easing PCL（-1） phenomenon. The cycle life of the sample batteries was improved obviously. So Pb-Ca-Sn-Al-Ce alloy is an excellent anodic grid material for valve-regulated lead-acid batteries.