Bio-templated formation of defect-abundant VS2 as a bifunctional material toward high-performance hydrogen evolution reactions and lithium−sulfur batteries

Catalyzing the polysulfide conversion for promoting lithium sulfur battery performances: A review

“…Since then, a variety of reports on TMSs as scaffolding or encapsulating materials for S cathode have demonstrated to ameliorate the LiPS shuttle effect. For example, bulk-type sulfides based on Group VIIIB elements (i.e., FeS 2 [71,72], CoS x [73][74][75][76] and NiS x [77,78]) and layered sulfides based on either early transition metals (i.e.,TiS 2 [79], MoS 2 [80,81], NbS 2 [82], VS 2 [83,84], VS 4 [85] and WS 2 [86][87][88]) or non-transition metals (i.e., SnS 2 [89]), have been widely investigated as the cathode additives for LSBs. Among them, Co-based sulfides [90] (Co 4 S 3±y , Co 9 S 8 , Co 1Ày S, Co 3 S 4 , and CoS 2 [49]) gather the general advantages due to their various tunable valence, strong coordination to LiPS binding schemes (in Fig.…”

Multifunctional V3S4-nanowire/graphene composites for high performance Li-S batteries

“…The inorganic materials with polar surface can interact with lithium polysulfides strongly to restrain the loss of active materials [26][27][28][29][30][31]. For instance, the vanadium-based materials can anchor lithium polysulfides tightly and improve the redox kinetics [32][33][34]. Because of such synergistic effects, the Li-S batteries exhibit stable cycling 1 Beijing Key Laboratory for Magnetoelectric Materials performance.…”

Insight into the Anchoring and Catalytic Effects of VO2 and VS2 Nanosheets as Sulfur Cathode Hosts for Li–S Batteries

“…The negative physiochemical properties of Li 2 S n , including low electronic conductivity, poor Li + diffusivity, high dissolvability, and large decomposition energy, seriously hinder the electrochemical performance of Li–S batteries. To address these problems, many transition‐metal oxides and their sulfide counterparts have been studied as HMs for Li–S batteries. However, very little is known regarding the distinctions between them in Li–S battery operations.…”

“…ic ability of these HMs can decrease the decomposition energy of Li 2 S, resulting in fast reactionkinetics. [11] In Li-S batteries, the Sc athode experiences multiple reduction/oxidation reaction steps duringc ycling, consequently forming as eries of Li 2 S n intermediate products.T he negative physiochemical properties of Li 2 S n ,i ncluding low electronic conductivity,p oor Li + diffusivity,h igh dissolvability,a nd large decomposition energy,s eriously hinder the electrochemical performance of Li-S batteries.T oa ddress these problems, many transition-metal oxides [13,45] and their sulfide counterparts [46][47][48] have been studied as HMsf or Li-S batteries. However,v ery little is known regarding the distinctions between them in Li-S battery operations.…”