铅镧和铅钐合金在硫酸溶液中生长的阳极膜性质的研究  

Studies on the Properties of the Anodic Films Formed on Lead- Lanthanum and Lead-Samarium Alloys in Sulfuric Acid Solution

作　　者：柳厚田[1] 杨春晓[1] 梁海河[1] 杨炯[1] 周伟舫[1] 

机构地区：[1]复旦大学化学系,上海200433

出　　处：《电化学》2001年第4期439-444,共6页Journal of Electrochemistry

基　　金：国家自然科学基金 (2 98730 13)资助项目

摘　　要：应用交流伏安法和线性电位扫描法研究了Pb ,Pb 1.0at%La和Pb 1.0at%Sm电极在硫酸溶液中以 0 .9V(vs .Hg/Hg2 SO4 )生长的阳极Pb(Ⅱ )膜增长率和膜的阻抗实部变化 ,并采用循环伏安法研究了它们在 0 .6～ 1.6V(vs.Hg/Hg2 SO4 )间的循环伏安特性 ,结果表明 :在铅中添加Sm有利于抑制铅的阳极腐蚀和降低阳极Pb(Ⅱ )膜的阻抗 ,La亦可降低阳极Pb(Ⅱ )膜的阻抗 。AC voltammetry,linear sweep voltammetry,and cyclic voltammetry were applied to study the anodic corrosion of Pb,Pb 1.0at%La and Pb 1.0at%Sm electrodes in 4.5 mol·dm -3 H 2SO 4 solution (25 ℃).The experiment results show that samarium can inhibit the anodic corrosion of lead and decrease the impedance of anodic Pb(Ⅱ) film. Lanthanum can also decrease the impedance of the anodic Pb(Ⅱ)film, but the effect is smaller.

关 键 词：铅酸蓄电池 铅钙合金 铅镧合金 铅钐合金 铅电极 阳极膜 电化学 

分 类 号：O646.6[理学—物理化学]