Extended Data Fig. 2: X-ray photoelectron spectra (XPS) of the cycled Li° electrodes in the Li° || NMC111 cells using different electrolytes after C-rate tests at room temperature.
From: Stable non-corrosive sulfonimide salt for 4-V-class lithium metal batteries
a, C 1s. b, O 1s. c, F 1s and d, Li 1s. See the detailed discussions associated with the results in the Supplementary Information.
