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运用电化学阻抗谱(EIS)并结合扫描电子显微镜(SEM)研究了石墨电极在两电极扣式电池和三电极玻璃电解池中的首次阴极极化过程.研究指出,两电极扣式电池体系中石墨电极首次阴极极化过程的EIS谱特征及其变化不能解释固体电解质相界面膜(SEI膜)的形成过程,但是可以用三电极玻璃电解池中获得的石墨电极首次阴极极化的EIS谱特征及其变化加以说明.结果表明,在石墨负极首次阴极极化过程中SEI膜主要在1.0～0.6V电位区间形成.
Electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) were used to study the first cathodic polarization of graphite electrodes in two-electrode button cell and three-electrode glass cell. EIS spectral characteristics and their changes in the first cathodic polarization of graphite electrodes can not explain the formation of solid electrolyte interface film (SEI film), but the EIS spectral characteristics of the first cathodic polarization of graphite electrodes obtained in a three-electrode glass cell The results show that the SEI film is mainly formed in the potential range of 1.0-0.6 V during the first cathodic polarization of graphite anode.