An in situ decorated cathode with LiF and F@C for performance enhanced Li–S batteries

Abstract

A simple but effective in situ decorated cathode is presented for Li–S batteries, utilizing the irreversible discharge products between a cathode additive (carbon fluoride) and Li. The in situ formed LiF and F doped carbon can be functional and beneficial to the battery performance, not only suppressing the “shuttle effect”, but also facilitating the electron and ion transportation and accelerating the reaction kinetics.