锂氟化碳-二氧化锰电池贮存性能影响因素研究  

Study on influence factors of the storage performance of lithium carbon monofluoride-manganese dioxide battery

作　　者：孟宪玲[1] 杨忠[2] 苏晓倩[1] 杨芳凝 穆浩 MENG Xianling;YANG Zhong;SU Xiaoqian;YANG Fangning;MU Hao(Tianjin Institute of Power Sources,Tianjin 300384,China;Military Representative Office of the Equipment Department of PLA Rocket Force in Tianjin,Tianjin 300381,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,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]中国人民解放军火箭军装备部驻天津地区军事代表室,天津300381 [3]北京空间飞行器总体设计部,北京100094

出　　处：《电源技术》2021年第8期1012-1015,共4页Chinese Journal of Power Sources

摘　　要：以氟化碳和二氧化锰复合材料为正极的锂氟化碳-二氧化锰电池,既保留氟化碳材料高比能量的特点,又兼顾二氧化锰倍率性能好的优势。与其他一次电池相同,贮存性能是影响锂氟化碳-二氧化锰电池实际使用可靠性的重要指标。从正极烘干温度、预放电工艺、粘结剂、贮存温度等方面对锂氟化碳-二氧化锰电池贮存寿命的影响进行了研究。结果表明:烘干温度为150~180℃时,电池的胀气得到明显抑制,有利于改善电池的长期贮存;预放电容量比例3%以上可以抑制电池的胀气,在实验范围内与放电电流无关;N1粘结剂可以保持正极的完整度,进而影响电池贮存性能的可靠性;随着贮存温度的升高,电池的自放电反应速率加快,高温贮存前期容量损失率较大,后期由于负极表面钝化膜的形成,正负极表面状态趋于稳定,电池的自放电反应速率也相应放缓。The lithium carbon fluoride-manganese dioxide battery using carbon fluoride and manganese dioxide composite materials as the positive electrode not only retains the high specific energy characteristics of carbon fluoride materials,but also has the advantages of good rate performance of manganese dioxide.Like other primary batteries,storage performance is an important indicator that affects the operational reliability of lithium carbon fluoride-manganese dioxide batteries.The influence of positive electrode drying temperature,pre-discharge process,binder and storage temperature on the storage life of lithium fluorocarbon-manganese dioxide battery was studied.The results show that when the drying temperature is 150~180℃,the swelling problem of the battery is significantly inhibited,which is beneficial to improve the long-term storage of the battery.When the ratio of pre-discharge capacity is over 3%,the swelling problem of the battery can be inhibited,and it has nothing to do with the discharge current within the scope of the test.The binder N1 can affect the integrity of the positive electrode and the reliability of the battery storage performance.As the storage temperature increases,the self-discharge reaction rate of the battery accelerates,and the capacity loss rate in the early stage of high-temperature storage is greater.With the formation of the surface passivation film,the surface state of the positive and negative electrodes tends to be stable,and the battery self-discharge reaction rate also slows down accordingly.

关 键 词：锂氟化碳-二氧化锰电池 贮存性能 影响因素 

分 类 号：TM911[电气工程—电力电子与电力传动]