Fig. 5: Structure characterizations of NCM811 positive electrode and the 3D nanostructure of CEI.
From: Thermoresponsive ether-based electrolyte for wide temperature operating lithium metal batteries
a, b In-situ XRD characterization of the NCM811 positive electrode during the initial charge/discharge in TO- (a) and THF-based (b) electrolytes. c, d HRTEM and FFT images of cycled NCM811 positive electrodes with TO- (c) and THF-based (d) electrolytes after 100 cycles at −40 °C. e Depth sputtering profiles and 3D renders of the CEI in Li||NCM811 cells with TO-based electrolytes. Normalized intensity is obtained through 1000/(intensity) conversion. f Schematic diagram of CEI formation and positive electrode particles cycled in THF- and TO-based electrolytes.
