Nitrogen–sulfur dual-doped porous carbon spheres/sulfur composites for high-performance lithium–sulfur batteries

Abstract

Simultaneously introduced nitrogen–sulfur through one reagent. The as-prepared PCS-NS/S composites exhibited excellent electrochemical performance as positive electrode for Li–S battery.

Nitrogen/sulfur dual-doped micro-mesoporous hierarchical porous carbon as host for Li-S batteries

“…This prevents the full utilization of sulfur leading to reduced rate of utilization. In addition, the larger pore diameters of the mesopores accelerate the dissolution of polysulfides, resulting in the loss of sulfur-active compounds and a weakened cycle stability ( Zhao et al, 2019 ). Hence, taking advantage of both the types of micropores and mesopores, hierarchical porous carbon can be designed consisting of both the pores to increase the Li-S batteries capability.…”

Micro‐Mesopores Nitrogen‐Doped Carbon Combined Polar‐MoS2 as Host for High‐Performance Li‐S Batteries

“…It is also possible to improve the endurance and capacity of different equipments with reduction of unit load weight significantly when current lithium‐ion battery is replaced by Li−S battery as an energy storage system. Hence various interesting results on Li−S batteries have been reported in the literature . However, various problems still hinder the industrial application of Li−S batteries, among which the shuttle effect of lithium sulfide, the intermediate of the electrochemical reaction and the safety issues related to the growth of lithium dendrites are the most serious ones.…”

Nitrogen-phosphorus dual-doped auricularia auricula porous carbon as host for Li-S battery

“…Because polysulfide is mainly bound by physical adsorption to inhibit the shuttle effect [ 14 ], and sulfur fixation capacity is limited [ 15 ]. Moreover, the presence of pure carbon is mostly in the form of sp 3 hybridization [ 16 ], with a low degree of graphitization and relatively poor conductivity [ 17 ]. Therefore, finding a simple and mild method to functionalize and modify carbon materials to further improve its conductivity and chemical adsorption capacity for polysulfide is particularly critical.…”