低自放电Cd-Ni蓄电池研制  

Development of low self-discharge Cd-Ni battery

作　　者：薄长明[1] 童书辉 张宜楠[1] 

机构地区：[1]中国电子科技集团公司第十八研究所,天津300384 [2]海军装备部,北京100841

出　　处：《电源技术》2015年第7期1458-1459,1510,共3页Chinese Journal of Power Sources

摘　　要：研究了降低Cd-Ni蓄电池自放电的几个技术方法和Cd-Ni蓄电池在45℃及常温环境下的自放电对应关系。通过添加过渡金属元素Nb和Y提高正极过氧电位、采用磺酸基接枝聚丙烯隔膜、优化提高电解液Na+含量,电池自放电明显降低,常温搁置1年自放电率20%左右;研制的Cd-Ni蓄电池在45℃下搁置1个月的自放电率与常温搁置3个月自放电率相当,45℃搁置3个月的自放电率与常温搁置1年自放电率相近。Several methods to decrease the self-discharging of Cd-Ni batteries were studied, and the corresponding self-discharging relation at 45 ℃ and room temperature was researched. The self-discharge rate of nickel-cadmium battery decreased obviously by adding additives of Nb element and Y element to increase oxygen over-voltage, using the sulfonated hydrophilic separator and adapting the electrolyte composition rich of Na^＋; the self-discharge rate of the battery was about 20% during 1 year storage at room temperature. The self-discharge rate of the battery during 1 month storage at 45 ℃ was closed to the rate of the battery during 3 months storage at room temperature. And the self-discharge rate of the battery during 3 months storage at 45 ℃ was closed to the rate of the battery during 1 year storage at room temperature.

关 键 词：Cd-Ni蓄电池 自放电 过氧电位 隔膜 电解液 

分 类 号：TM912[电气工程—电力电子与电力传动]