Electrochemical Impedance Spectra and State-of-charge Analysis of Lithium - Thionyl Chloride Primary Batteries

摘要：

The EIS of Li/SOCl2 batteries (3.6V/1.2Ah) were measured at various SOC in the frequency range 20kHz～5mHz. It was found that the EIS altered with strong regularity during the discharge, which externalized the two semicircles becoming bigger gradually, as well as the secondary semicircle drifting upwards gradually. It is possible to use the EIS alter characteristics for estimating the cells SOC. The most informative parameters for the SOC test in the region 40％～0％ are the ImZ* , log(Z* ) and phaseθ* on the extreme point of an EIS.

关键词： Li/SOCl2 battery state-of-charge (SOC) Electrochemical Impedance Spectra (EIS)

作者: GOU Ling-ling YUAN Zhong-zhi ZHONG Qing-hua LIU Jin-cheng

作者单位: School of Chemistry and Enviremental Science, South China Normal University, Guangzhou 510631, China EVE Battery Co. Ltd, HuiZhou 516006, China

会议类型: 国际会议

会议名称: 2006中日稻米品质测控及美味技术学术研讨会

会议地点: 北京

会议语种:英文

页码: 218-219

在线出版日期: 2006-08-03（万方平台首次上网日期，不代表论文的发表时间）