Abstract
N-methylpyrrolidinium-based ionic liquid, with fluorine function group, N-(2-fluoroethyl) N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide is proposed as the co-solvent for Si anode. Scanning electron microscope, X-ray photoelectron spectroscopy as well as the impedance measurement is conducted to investigate its effect on the solid electrolyte interface formation. Cycling tests show that it can much better improve the cycling stability of Si than fluoroethylene carbonate or F-free ionic liquid analogue.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have