Fig. 2: Identification of incomplete oxygen redox activity. | Nature Communications

Fig. 2: Identification of incomplete oxygen redox activity.

From: Tailoring superstructure units for improved oxygen redox activity in Li-rich layered oxide battery’s positive electrodes

Fig. 2

a Initial charge and discharge curves of Li | |N36 coin cell in the voltage range of 2.0-4.7 V at 20 mA g−1 with specific points marked for ex-situ SXAS measurements. SXAS results of the (b) Ni L-edge, (c) Mn L-edge, and (d) O K-edge collected at pristine, charge to 4.45 V, charge to 4.7 V, and discharge to 2.0 V states. The FY mode was applied for Ni and O and the iFY mode was applied for Mn. e O K-edge RIXS spectra collected at an excitation energy of 531 eV at pristine, charge to 4.7 V, and discharged to 2.0 V states in the first cycle and (f) an enlarged view of the elastic region (0–1 eV).

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