Fig. 5: Summary and overall evaluation of dual-salt electrolytes.

a Long-term cycling performance at 0.1 A g⁻¹ with a cut-off capacity of 500 mAh g⁻¹ (in the cut-off voltage from 2 V to 5 V). b Overall comparison of the properties and performances of the LiFSI electrolyte and 0.25 M LiNO₃/0.75 M LiFSI electrolyte. c C K-edge and N K-edge XANES spectra for the cathodes after 3 cycles in single-salt LiFSI and dual-salt electrolytes. d Comparison of C-N species and LiF content on cathodes after 3 cycles in single-salt LiFSI and dual-salt electrolytes, and their coordination numbers of anions for these electrolytes. e MD simulation boxes and the corresponding percentages of different Li⁺ solvation clusters in dual-salt electrolytes. f LUMO energy values for representative Li⁺ solvation clusters in single-salt and dual-salt electrolytes. Colour scheme of molecules: Li, pink; C, light blue; H, white; O, red; N, navy; S, yellow; F, purple; and B, blue. The yellow and blue zones represent electron loss and gain, respectively.