Abstract:

The factors limiting the cycle life of lithium-sulfur batteries and effect of cathode，anode and electrolyte on the cycle life are reviewed. The factors limiting the cycle life are introduced as follows：formation of irreversible Li₂S，failure of porous structure of the cathode and parasitic reaction between species of electrolyte and lithium anode. The approaches to improving cycle life of lithium sulfur batteries are introduced as follows：appropriate binder，carbon materials and preparation method of cathode，protective technology of lithium anode，appropriate species of electrolyte，structure and design of battery. Future development of the research is also prospected.