Fig. 3
Oxygen stability of TM-O bonding and electron hole localization on oxygen. Oxygen K-edge SXAS spectrum of a OL-MNC b OH-MNC c D-MNC; the spectra collected on Pristine, 10th cycled and 100th cycled (discharged state) particle. d Schematic diagram of the possible O–/O2– redox couple position based on TM-O covalency
