LiF-LiCl-LiBr-KCl电解质在长工作时间热电池中的应用研究  

Application of LiF-LiCl-LiBr-KCl electrolyte in long working time thermal batteries

作　　者：赵亚旭[1] 白鑫涛 邢永慧[1] 王岩[1] ZHAO Ya-xu;BAI Xin-tao;XING Yong-hui;WANG Yan(Tianjin Institute of Power Sources,Tianjin 300384,China)

机构地区：[1]中国电子科技集团公司第十八研究所,天津300384

出　　处：《电源技术》2018年第7期1040-1041,1071,共3页Chinese Journal of Power Sources

摘　　要：为了实现长工作时间热电池用电解质低熔点(350~430℃)、较高电导率(500℃时>2 S/cm)的要求,探索性地对LiF-LiCl-LiBr-KCl四元电解质体系进行了研究,确定了各组分的比例,并对其进行熔点、粘结剂含量及单元电池性能验证。研究表明当LiF-LiCl-LiBr-KCl的摩尔比为15∶12∶63∶10时性能较优,此时电解质熔点为410℃;Mg O粘结剂的最佳添加量为50%(质量分数);同时其适用于小电流密度下长时间工作的热电池。In order to meet the target of the melting point(350-430℃)and the ionic conductivity(>2 S/cm)for long working time thermal batteries,LiF-LiCl-LiBr-KCl molten salt electrolyte was studied.The molar percentage of every halide was determined,and the melting point,the wetting percentage of binder and the performance of thermal batteries were examined.The test results show that when the molar percentage of LiF-LiCl-LiBr-KCl is 15∶12∶63∶10,the performance of thermal batteries is better.When the melting point of LiF-LiCl-LiBr-KCl molten salt is 410℃,the best addition of MgO binder is 50%,which is suitable for long working time thermal batteries.

关 键 词：热电池 熔盐 氧化镁 

分 类 号：TM911[电气工程—电力电子与电力传动]