XPS ANALYSIS FOR LITHIUM SURFACE AFTER EL ECTRODEPOSITION AND ANODIC-DISSOLUTION

The surface of Lithium electrode after electrodeposition and anodic di ssolution was analyzed with X-ray photoelectron spectroscopy (XPS). LI F, LiOH, and Li2O were detected in lithium electrodeposited on chromiu m substrate in 1 M LiPF6/EC+DME. It was found that Li2CO3 was produced on lithium when it was exposed to air during sample transfer from ele ctrolysis cell to the XPS apparatus. So using transfer vessel is effec tive for analysis of lithium without air contamination. The analysis o f the surface after electrical dissolution indicated that LIF formed o n lithium did not dissolve in electrolysis, and formed passivating fil m and isolated inactive lithium.