电解池对石墨电极性能的影响

Influence of electrolytic cells on the performance of graphite electrodes

运用电化学阻抗谱(EIS)结合循环伏安(CV),研究了石墨电极在三电极玻璃模拟电池和三电极扣式模拟电池中的首次阴极极化过程。玻璃模拟电池中获得的石墨电极首次阴极极化的EIS特征及其变化,可解释固体电解质相界面(SEI)膜的形成过程;扣式模拟电池中石墨电极首次阴极极化过程的EIS,可解释石墨电极中感抗产生的机理。

The initial lithiation of graphite electrode was investigated by electrochemical impedance spectroscopy（EIS）and cyclic voltammogram（CV）in a three-electrode glass simulated cell and a three-electrode button simulated cell.The variation of EIS features of the graphite electrode in the glass simulated cell with electrode polarization potential decreasing during the initial lithiation could use to investigate the formation mechanism of the solid electrolyte interphase（SEI）film;the variation of EIS features of the button simulated cell could use to explain the formation of inductive resistance of the graphite electrode during the initial lithiation.