摘要
研究电解液中的锂盐对锂二氧化锰(Li-MnO_2)一次电池内阻、开路电压、放电性能及安全性能的影响。锂盐为LiClO_4、LiBF_4、LiPF_6和双三氟甲基磺酰亚胺锂(LiTFSI)制备的Li-MnO_2电池,平均内阻分别为253 mΩ、277 mΩ、226 mΩ和293 mΩ,平均开路电压分别为3.31 V、3.25 V、3.26 V和3.29 V。在-25℃下,锂盐为LiTFSI制备的电池放电性能最好,1 000 mA恒流放电的中值电压、容量比锂盐为LiClO_4制备的电池分别约高0.13 V、78 m Ah。Li-MnO_2电池的放电性能均随温度的升高而升高,且差异减小。锂盐为LiTFSI制备的电池安全性能最好。
Influences of lithium salts in electrolyte on internal resistance,open circuit voltage（ OCV）,discharge performance and safety performance of Li-MnO_2 primary battery were studied. In order of LiClO_4、LiBF_4、LiPF_6 and lithium bis（trifluoromethylsulfonyl）imide（LiTFSI）,the average internal resistance was 253 mΩ,277 mΩ,226 mΩ and 293 mΩ,respectively,OCV was 3. 31 V,3. 25 V,3. 26 V and 3. 29 V,respectively. The battery prepared by Li TFSI had the best performance at- 25 ℃.Li-MnO_2 battery using LiTFSI got higher mean voltage（ by 0. 13 V） and more capacity（ by 78 m Ah） than that one using LiClO_4 at 1 000 m A galvanostatic discharge. The discharge performance of battery was improved with the temperature increasing,the difference of performance between lithium salts decreased. The safety performance of LiTFSI outtperformed other lithium salts.
出处
《电池》
CAS
CSCD
北大核心
2015年第6期297-300,共4页
Battery Bimonthly
基金
广东省战略性新兴产业发展项目([2011]1579)
