Fig. 3: Evolution of surface composition and structure after MC treatment.
From: A three-in-one strategy for lithium recovery and upcycling of spent cathode materials
a CO2 adsorption and desorption isotherms of P-NCM811, MA-NCM811-2h and MA-NCM811-16h at 0 °C. (inset: surface specific areas of P-NCM811 and MA-NCM811 with different activation times). b TOF-SIMS mass spectrum of the surface in P-NCM811 and MA-NCM811 (Supplementary Figs. 26 and 27). c TOF-SIMS depth profile of Li+ in P-NCM811 and MA-NCM811, and the sputtering depth is calibrated by the SiO2 sputtering rate (Supplementary Fig. 28). d Li 1s, e O 1s and f Ni 2p in-depth profile XPS of MA-NCM811.
