导电剂对锂离子电池低温性能的影响

采用恒流充放电法和交流阻抗法研究了阳极中添加不同的导电剂对锂离子电池低温性能的影响。运用SEM观察了添加不同导电剂对阳极极片表面形貌的影响。结果表明,和单一导电添加剂相比,复合导电添加剂使锂离子电池负极的电荷传导能力提高,整个充放电过程中的电荷转移电阻减小,使电池的低温性能得到明显改善。

Effect of conductive additives on the low-temperature performance of Li-ion battery

The influence of conductive additives in anode on the low temperature performance was studied with galavanostatic charge and discharge and electrochemical impedance spectroscopy（EIS） methods.SEM was used to analyze the effect of different conductive additives on the surface morphology of anode.The results showed that,compared with simplex group,compound conductive additives could improve the electric charge transmitting ability of anode,decrease the charge transfer resistance during the charge and discharge process,and greatly improve the low temperature performance.