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High energy density and long cycle life of lithium–sulfur (Li–S) batteries suffer from the shuttle/expansion effect. Sufficient sulfur storage space, local fixation of polysulfides, and outstanding electrical conductivity are crucial for a robust cathode host. Herein, a modified template method is proposed to synthesize a highly regular and uniform nitrogen/oxygen dual‐doped honeycomb‐like carbon...
Lithium–Sulfur Batteries
In article number 2200326, Kang‐Jun Baeg, Jun‐Woo Park, an co‐workers develop high‐energy‐density flexible lithium–sulfur (Li–S) batteries with high‐loading, free‐standing cathodes and chemically functionalized carbon mixture interlayers. The multimodal capturing effect via simultaneous physical trapping and strong chemical interactions is highly efficient for immobilizing...
The widespread adoption of Li‐ion batteries is currently limited by their unstable electrochemical performance and high flammability under mechanical deformation conditions and a relatively low energy density. Herein, high‐energy‐density lithium–sulfur (Li–S) batteries are developed for applications in next‐generation flexible electronics and electric vehicles with long cruising distances. Freestanding...
Purposeful control of the highly active crystal planes is an effective strategy to improve the nanocrystalline catalytic activity. Therefore, Co2P nanocrystals with high exposure of (211) lattice plane loaded at 2D hexagonal V2O3 nanosheets (H‐Co2P‐V2O3) are designed via the control of morphology. After optimization, this H‐Co2P‐V2O3 boosts the redox kinetics of lithium polysulfides (LiPSs) in lithium–sulfur...
The improvement of lithium–sulfur batteries is still impeded by notorious shuttling effect and sluggish kinetics on the S cathode, and rampant Li dendrite formation on the Li anode makes it worse. Herein, a type of single‐atom dispersed Mo on nitrogen‐doped graphene (Mo/NG) with a distinctive Mo‐N2O2‐C coordination structure first serving as a multifunctional material is designed by a structure‐oriented...
Lithium–sulfur batteries (LSBs) have attracted extensive attention owing to their high energy density and abundant sulfur resources. However, LSBs are still restricted by the unsatisfactory electrochemical performance resulting from the shuttle effect of lithium polysulfide (LiPSs), and the potential fire hazard caused by inflammable ether electrolytes and polyolefin separators. Herein, a facile immobilization...
The practical application of Li–S batteries is severely limited due to low sulfur utilization, sluggish sulfur redox kinetics, intermediate polysulfide dissolution/shuttling, and subsequent anode degradation. A smart cathode with efficient electrocatalyst and a protected anode is necessary. Herein, hollow carbon (HC) spheres are used as a sulfur host to improve the electrical conductivity and buffer...
Metal–sulfur batteries exhibit great potential as next‐generation rechargeable batteries due to the low sulfur cost and high theoretical energy density. Sodium–sulfur (Na–S) batteries present higher feasibility of long‐term development than lithium–sulfur (Li–S) batteries in technoeconomic and geopolitical terms. Both lithium and sodium are alkali metal elements with body‐centered cubic structures,...
The commercialization of lithium–sulfur batteries with ultra‐high theoretical energy density is restricted mainly by the notorious polysulfides “shuttle effect” and slow Li2S redox reaction kinetics. A sulfur host material with high catalytic activity and high conductivity is greatly desired to improve its electrochemical performance. Herein, a sulfur host material, etched cotton@petroleum asphalt...
In this study, cuboid‐like anhydrous CoC2O4 particles (CoC2O4‐HK) are synthesized through a potassium citrate‐assisted hydrothermal method, which possess well‐crystallized structure for fast Li+ transportation and efficient Li+ intercalation pseudocapacitive behaviors. When being used in lithium‐ion batteries, the as‐prepared CoC2O4‐HK delivers a high reversible capacity (≈1360 mAh g‐1 at 0.1 A g‐1...
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