Fig. 3: Passivation layers on both the edge-plane and base-plane in NMC.
From: Unlocking the passivation nature of the cathode–air interfacial reactions in lithium ion batteries
The images are taken after exposing samples to H2O vapor (PH2O = 5 × 10−2 Torr) for 30 mins. a Surface of NMC622. b Surface of NMC811. Scale bar, 5 nm a, b.
