Transition Metal Selenides in Lithium-Sulfur Batteries

Lithium-sulfur batteries have gotten to be a hot inquire about subject due to their tall hypothetical particular capacity (1675 mAh center dot g(-1)) and energy density (2600 Wh center dot kg(-1)). Focal points such as plenteous sulfur assets, non-toxicity and natural invitingness moreover make lithium-sulfur batteries one of the foremost promising vitality capacity frameworks. In any case, the destitute electrical conductivity of sulfur, the "transporting" of polysulfide between anodes and the contrast in thickness between sulfur and its diminishment items are still issues that restrain its application. Related studies have appeared that transition metal selenides have great electrical conductivity. Based on their polar characteristics, transition metal selenides can accelerate the energy of redox responses, restrain shuttle effects, and improve the electrochemical properties of lithium-sulfur batteries. This paper mainly reviews the applications of transition metal selenides in lithium-sulfur battery cathode materials and separators, and presents a viewpoint on research direction and development of transition metal selenides in lithium-sulfur battery applications.