Shuttling effectYolk-shell structureZnS particles? 2024 Elsevier B.V.The catalytic effect of zinc sulfide (ZnS) on the transformation of polysulfides (Li2S8) to lithium sulfide (Li2S) has been proven by the enhancement in the rate performance of lithium-sulfur (Li–S) batteries incorporating ...
Shuttle Effect 也叫穿梭效应，指的是在充放电过程中，正极产生的多硫化物 (Li2Sx) 中间体溶解到电解液中，并穿过隔膜，向负极扩散，与负极的金属锂直接发生反应，最终造成了电池中有效物质的不可逆损失、电池寿命的衰减、低的库伦效率。为了一直穿梭效应，主要是在正极用高比表面积的具有孔结构的载体（...
It is generally believed that the “shuttle effect” in Li/S batteries causes serious performance degradation, such as low coulombic efficiency, sulfur loss, and so on. Here, we report a new mechanism based on the disproportionation reactions of polysulfides (PSs) to explain the rapid fading of...
which contributes to the 75% of the total specific capacity (~ 1256 mAh g−1). This part undergoes a two-stage electrochemical reduction as well. In the first stage, soluble lower-order polysulfides are reduced to insoluble Li2S2or Li2S, and this process is a slow two-phase reaction ...
Long-chain lithium polysulfides produced during charging (Li2+Sn2-,n>4) have a high mobility through the electrolyte and can reach the surface of the Li metal anode, where they are reduced to shorter chain lithium polysulfides (Li2+Sn2-,n<4). These shorter chain lithium polysulfides diffuse...
N doping induces a strong Li⋯N interaction in the defective graphene systems, in which the pyrrolic N rather than the pyridinic N plays a dominant role in trapping of lithium polysulfides. The shuttle effect can be further depressed via pyrrolic B,N co-doped defective graphene materials, ...
However, the shuttle effect of lithium polysulfides in sulfur c... N Shen,T Li,B Li,... - 《Nanoscale》 被引量: 0发表: 2024年 Stop Four Gaps with One Bush: Versatile Hierarchical Polybenzimidazole Nanoporous Membrane for Highly Durable Li–S Battery Lithium-sulfur (Li-S) batteries are ...
shuttle behavior as well as boost in polysulfides conversion kinetics.The cell with modified separator delivers a high discharge capacity of 1,284.5 mAh路g... J Wang,W Cai,X Mu,... - 纳米研究:英文版 被引量: 0发表: 2021年 Hollow Co-Fe LDH as an effective adsorption/catalytic bifunctional...
A modified separator by a composite of Fe3O4 nanoparticles and reduced graphene oxide (RGO) sheets is designed as an efficient polysulfides barrier and an upper current collector to suppress shuttle effect and improve utilization of the active material for lithium-sulfur batteries (LSBs). The RGO...
ofpolysulphideconversion, protect the Li anode from corrosion and lithium-ion diffusion rate. In another study, to effectively avoid theshuttle effectof polysulfides between the cathode and anode, a BN-Ketjenblack-xKOH@S composite (xmeans 1, 2, and 3M) cathode for Li–S batteries with enhanced...