Fig. 1

HOMO/LUMO energies of EC, PC EP and CMPIS-molecules"

Fig. 2

(a) CV curves; (b) dQ/dV curves; (c) Cycle performance; (d) EIS impedance test after 3 cycles at room temperature; (e) EIS impedance test after 250 cycles at room temperature; (f) DSC test after 250 cycles"

Fig. 3

(a) CV curves; (b) LSV curves; (c) Leakage current test; (d) Cycle performance; (e) EIS impedance test after 3 cycles at room temperature; (f) EIS impedance test after 250 cycles at room temperature"

Fig. 4

SEM image of graphite anode, (a) baseline electrolyte and; (b) CMPTS-based electrolyte after 250 cycles. TEM images of LCO cathode, (c) baseline electrolyte; (d) CMPTS-based electrolyte after 250 cycles"

Fig. 5

XPS spectra of AG with baseline and CMPTS-based electrolyte after 3 cycles; (a) S 2p spectra; (b) N 1s spectra; XPS spectra of LCO with baseline and CMPTS-based electrolyte after 3 cycles; (c) S 2p spectra; (d) N 1s spectra"

Fig. 6

(a) AG/LCO pouch cells cycle performance at room temperature; (b) cycle performance at 45 ℃; (c) the high-temperature storage at 60 ℃ for 7 days; (d) the content of cobalt of the LCO"

Fig. 7

Possible reaction mechanisms of CMPTS at AG and LCO"

Fig. S1

(a) CV curves of baseline; (b) rate performance of Li/AG; (d) fitted values for Li/AG half-cell after 3 cycle; (d) fitted values for Li/AG half-cell after 250 cycles"

Fig. S2

(a) CV curves of baseline; (b) rate performance of Li/LCO half-cell; (d) fitted values for Li/LCO half-cell after 3 cycle; (d) fitted values for Li/LCO half-cell after 250 cycle"

Fig. S3

XPS spectra of LCO cathodes with baseline and CMPTS-based electrolyte after 3 cycles; (a) C 1s spectra; (b) O 1s spectra; (c) P 2p spectra; (d) F 1s spectra"