Regulation of surface oxygen activity in Li-rich layered cathodes using band alignment of vanadium phosphate surface coatings

Interfacial electronic band alignment between alkali vanadium( iii ) phosphate (Na 3 V 2 (PO 4 ) 3 , Li 3 V 2 (PO 4 ) 3 ) coatings regulate oxygen redox activity and enhance electrochemical performance in prototypical Li-rich layered oxide, Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 .