化学学报 ›› 2008, Vol. 66 ›› Issue (16): 1857-1862. 上一篇    下一篇

研究论文

添加铈对铅钙合金在硫酸溶液中电化学性能的影响

李万千a 唐有根*,a,b 宋永江b 刘小锋a 黎福根b 罗 继b

  

  1. (a中南大学化学化工学院化学电源与材料研究所 长沙 410083)
    (b丰日电气集团中南大学丰日化学电源研发中心 长沙 410331)
  • 收稿日期:2007-12-26 修回日期:2008-03-06 出版日期:2008-08-28 发布日期:2008-08-28
  • 通讯作者: 唐有根

Effect of Cerium Addition On Electrochemical Performances of Pb-Ca Alloy in H2SO4

LI, Wan-Qian a TANG, You-Gen *,a,b SONG, Yong-Jiang b LIU, Xiao-Feng a
LI, Fu-Gen b LUO, Ji b
  

  1. (a Chemical Power Source and Material Institute, College of Chemistry & Chemical Engineering,
    Central South University, Changsha 410083)
    (b Fengri Chemical Power Research and Develement Center, Fengri Electric Group Co. LTD, Central South University,
    Changsha 410031)
  • Received:2007-12-26 Revised:2008-03-06 Online:2008-08-28 Published:2008-08-28
  • Contact: TANG, You-Gen

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.

关键词: 铅酸蓄电池, 铅钙合金, 铈, 耐腐蚀性能

In order to improve corrosion-resistance property of Pb-Ca alloy and increase the cycle life of 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 addition, 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.

Key words: lead acid batteries, Pb-Ca alloy, cerium, corrosion-resistance behavior