共晶盐添加剂对NiF_(2)正极材料性能的影响  

Effect of eutectic-salt additives on performance of NiF_(2) cathode material

作　　者：邢永慧[1] 安建民 刘宇飞 原强 白鑫涛 XING Yonghui;AN Jianmin;LIU Yufei;YUAN Qiang;BAI Xintao(Tianjin Institute of Power Sources,Tianjin 300384 China;The Third Military Representative Room of Tianjin Region,Air Force Armaments Department,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 [2]空军装备部驻天津地区第三军事代表室,天津300384

出　　处：《电源技术》2024年第8期1662-1666,共5页Chinese Journal of Power Sources

摘　　要：氟化镍作为一种新型热电池正极材料,具有电压平台高、理论比容量高、热稳定性好的优点。但是,由于NiF_(2)固有的离子导电特性差,造成其实际的放电性能并不理想。共晶盐是一种常见的正极添加剂,利用其在熔融态下的高离子导电特性,可以降低NiF_(2)正极材料表面电解质离子的扩散阻力,进而提升电化学性能。通过微观结构分析和电性能测试,证明了LiF-LiCl-LiBr共晶盐添加剂可以显著提升NiF_(2)正极的放电性能。通过调整LiF-LiCl-LiBr共晶盐的添加量,实现NiF_(2)正极材料在500 mA/cm^(2)条件下的稳定输出电性能。Nickel fluoride,as a new type of cathode material for thermal batteries,has the advantages of high voltage plateau,high theoretical specific capacity,and good thermal stability.However,the poor ionic conductivity characteristics inherent in NiF_(2) cause its unsatisfactory actual discharge performance.Eutectic salts are common positive electrode additives,which can reduce the diffusion resistance of electrolyte ions on the surface of NiF_(2) positive electrode materials by utilizing their high ion conductivity characteristics in the molten state,thereby improving electrochemical performance.In this paper,it is demonstrated that LiF-LiCl-LiBr eutectic salt additives can significantly enhance the discharge performance of NiF_(2) cathode through microstructure analysis and electrical performance tests.By adjusting the addition amount of LiF-LiCl-LiBr eutectic salt,the stable output electrical performance of NiF_(2) anode material under the condition of 500 mA/cm^(2) was realized.

关 键 词：NiF_(2) 共晶盐添加剂 热激活电池 

分 类 号：TM911[电气工程—电力电子与电力传动]