摘要
研究了使用草酸二氟硼酸锂(LiBC2O4F2)电解液的锂离子电池的电化学性能。循环伏安曲线和交流阻抗谱表明:电池的可逆性优良,电荷转移电阻较低。充放电测试表明:电池的首次充放电比容量较高,循环性能优良,在25℃时,0.2C首次充、放电比容量分别为135.9 mAh/g和125.4 mAh/g;在25℃和60℃时,第50次0.5C循环的容量保持率分别为98.7%和92.5%。
Electrochemical performance of Li-ion battery using lithium difluoro （axalato）borate（LiBC2O4F2） electrolyte was studied. Cyclic vohammetry curves and AC impedance plots showed that the battery had an excellent reversibility and a lower charge transfer resistance. Charge-discharge test showed that the battery had a high initial charge-discharge specific capacity and fine cycle performance. At 25 ℃ ,its 0.2 C initial charge and discharge specific capacities were 135.9 mAh/g and 125.4 mAh/g, respectively. At 25 ℃ and 60 ℃ ,its capacity retention ratios of the 50th 0.5 C cycle were 98.7% and 92.5% ,respectively.
出处
《电池》
CAS
CSCD
北大核心
2009年第5期263-265,共3页
Battery Bimonthly
基金
湖南省自然科学基金(09JJ6017)
高校引进人才基金(104-0053)
