作　　者： ; ; ; (刘金成）;

机构地区： 华南师范大学化学与环境学院

出　　处： 《中山大学学报（自然科学版）》 2007年第B06期218-219,共2页

摘　　要： 对Li/SOCl2实体电池不同荷电状态下电池电化学阻抗谱测试,结果表明,电池阻抗谱变化有很好的规律,主要体现在阻抗谱中两个圆弧的先较小后增大。这就有可能根据电池EIS谱局部变化特征来预测电池的荷电状态。在电池荷电状态≤40%时,其有效预测参数为阻抗谱高频端圆弧最高点对应的ImZ*,log(Z*)及相角θ*。 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 cell＇s 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： 电池 荷电状态 电化学阻抗谱

领　　域： [理学] [理学]