Confinement of polysulfides: Physical and chemical methods
Lithium-sulfur (Li-S) batteries are considered the most appealing and viable energy-storage technologies for high theoretical energy density and nature abundant of sulfur. However, short lifespan and continual capacity fading caused by the lithium polysulfides dissolution still prevent the battery from practical application. In this manuscript, Prof. Guo and coworkers reviewed the common confinement of polysulfides and categorized them into physical and chemical methods. Physical methods include coating, loading and separating, while chemical methods which show various bondings are discussed as three parts, polar-polar interaction, Lewis acid-based interaction and sulfurization. In addition, some new perspectives about the Li-S batteries are also mentioned.