MgO添加剂对Zn-Ni蓄电池负极性能的影响  

Effects of MgO additive on performance of Zn anodes in Zn-Ni secondary batteries

作　　者：李景威[1,2] 杨占红[1] 谷鹏[1] 毛英[1] 

机构地区：[1]中南大学化学化工学院,化学电源与材料研究所,湖南长沙410083 [2]南海区安全生产监督管理局,广东佛山528200

出　　处：《电池工业》2009年第1期31-33,共3页Chinese Battery Industry

摘　　要：为提高Zn-Ni电池的电化学性能,通过物理混合的方法在锌负极活性物质中掺入氧化镁,并以恒电流充放电测试对比研究了不同MgO添加量对Zn-Ni电池充放电特性、内阻、放电容量和循环寿命的影响。实验表明:Zn-Ni电池锌负极中添加适量MgO可减少充放电极化、减少循环后期的内阻、提高负极活性物质利用率、延长电池循环寿命。添加1.0%wt的MgO添加量不宜过大。MgO were added in Zn anodes of Zn-Ni batteries by physical blending to improve electrochemical performance of Zn-Ni batteries. And the effects of varying contents of MgO addition on the charge/discharge performance,internal resistance, discharge capacity and cycle life of Zn-Ni batteries were contrasted by constant-current charge/discharge tests. The test results showed that ,the proper content of MgO addition might reduce the charge/discharge polarization and the internal resistance of later cycle, raise the efficiency of active material of anodes and cycle life of Ni-Zn batteries. And the battery with 1.0%wt MgO addition had the best performance.

关 键 词：Zn-Ni蓄电池 锌负极 添加剂 氧化镁 

分 类 号：TM912.2[电气工程—电力电子与电力传动] O61[理学—无机化学]