Figure 2
From: In Situ Ambient Pressure X-ray Photoelectron Spectroscopy Studies of Lithium-Oxygen Redox Reactions

In situ XPS data of Li 1s, O 1s and V 2p collected under UHV.
(a) Discharge from OCV (1.85 Vcell) to 0 Vcell. (b) Charge from OCV (0.1 Vcell) to 3.0 Vcell.