不同钙添加剂对锌镍蓄电池性能的影响  

Effects of different calcium additives on the performance of Ni-Zn secondary batteries

作　　者：廖建平[1] 杨占红[1] 刘小锋[1] 迟伟伟[1] 赵玉彬 

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]新乡联达华中电源有限公司,河南新乡453731

出　　处：《电池工业》2009年第3期189-192,共4页Chinese Battery Industry

摘　　要：为提高钙添加剂的使用效率,以共沉淀法合成了完整晶形的锌酸钙晶体,并用XRD和SEM对其进行了表征;研究了在锌负极中以氢氧化钙和锌酸钙两种不同材料掺杂,电池在循环寿命、高温存放自放电以及存放后容量恢复等性能上的差异。实验结果表明:两种方式不同钙掺杂物质对电池循环寿命影响不大,但掺杂氢氧化钙后电池高温贮存性能与贮存后容量恢复性能要明显优于负极掺杂锌酸钙的电池。因此,在锌负极中掺杂氢氧化钙是一种更有效、操作简单、成本低廉、且不造成环境污染的钙掺杂方法。In this paper, calcium zincate crystals were firstly synthesized by coprecipitation methode in order to improve the efficiency of calcium additives. The obtained samples were then characterized by XRD and SEM. Calcium hydroxide and calcium zincate were added in znic negative of Ni-Zn batteries. The differences in cycle life and self-discharge performance were mainly investigated after 7 days of storage at 50℃. The results showed that there was no obvious differences in cyclic life of the batteris added with calcium hydroxide and calcium zincate. But calcium hydroxide led to better performance of batteries stored at high-temperature and quick recovery of capacity after storage at high-temperature. calcium hydroxide dopant had higher efficiency, lower cost and no contamination to environment.

关 键 词：锌镍蓄电池 锌负极 氢氧化钙 锌酸钙 自放电 

分 类 号：TM912.2[电气工程—电力电子与电力传动]