“…[15][16][17][18] Furthermore, heteroatoms (i.e., B, N, P, S) are introduced into the surface of carbon materials, which can produce strong chemical affinity, and then suppress the diffusion of LiPSs more efficiently. [19][20][21] In addition, due to the high activation energy, the conversion from soluble LiPSs to insoluble Li 2 S 2 /Li 2 S in electrode/electrolyte interface is sluggish, which will aggravate the diffusion of LiPSs from cathode to anode. 22,23 Hence, accelerating the sulfur redox reaction has recently emerged as a new frontier of research, and many catalysts, such as transition-metal oxides, suldes, nitrides, were employed as sulfur hosts in Li-S batteries.…”