Figure 3

Analysis of the Co-doped Li2O cathodes after the charge and the discharge.
(a) and (d) Analytical peroxide amounts of the cathodes after the charge (a) and discharge (d). (b) and (e) Co K-edge XANES absorption edge positions of the cathodes after the charge (b) and discharge (e). (c) and (f) Charge (c) and discharge (f) voltage curves at current density of 4.5 mA g−1.