2,4-difluorophenyl isothiocyanate as a redox mediator in the electrolyte for kinetically favorable Li-S batteries

Abstract

2,4-difluorophenyl isothiocyanate (DPIC) was served as a redox mediator for kinetically favorable electrolyte, which can boost the activation of insulating sulfur and sulfide, accelerate the bidirectional conversion reaction kinetics as well as restrict the undesirable shuttle effect, consequently ensuring high sulfur utilization and extended cycle lifespan of Li-S batteries.