New Development of Key Materials for High-Performance Lithium-Sulfur Batteries

The lithium/sulfur redox couple has almost the highest specific-energy density of 2 600 Wh/Kg among all the redox couples enabling for chargeable batteries and has a specific capacity of 1 675 mAh/g, assuming complete reaction of lithium and sulfur to the product Li2S. Fruitful results were made with the purpose of enhancing the reversibility of the lithium sulfur battery and the utilization of sulfur in the cathode over the past twenty years. In this paper, the effects of the factors on the capacity fading of the lithium sulfur battery are studied. New method and technical development of lithium sulfur battery reported in recent years are reviewed, mainly including the development of the cathode materials, adhesive agents, electrolyte and anode of the battery. The further tendencies of lithium sulfur battery are also represented.