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The practical application of Li‐S batteries is still severely restricted by poor cyclic performance caused by the intrinsic polysulfides shuttle effect, which is even more severe under the high‐temperature condition owing to the inevitable increase of polysulfides’ solubility and diffusion rate. Herein, tungsten‐doped vanadium dioxide (W‐VO2) micro‐flowers are employed with first‐order metal‐insulator...
Polysulfide shuttle effect and sluggish sulfur reaction kinetics severely impede the cycling stability and sulfur utilization of lithium‐sulfur (Li‐S) batteries. Modulating d‐band electronic structures of molybdenum disulfide electrocatalysts via p/n doping is promising to boost polysulfide conversion and suppress polysulfide migration in lithium‐sulfur batteries. Herein, p‐type V‐doped MoS2 (V‐MoS...
The practical application of Li‐S batteries is seriously hindered due to its shuttle effect and sluggish redox reaction, which requires a better functional separator to solve the problems. Herein, polypropylene separators modified by MoS2 nanosheets with atomically dispersed nickel (Ni‐MoS2) are prepared to prevent the shuttle effect and facilitate the redox kinetics for Li‐S batteries. Compared with...
Polysulfide shuttling and sluggish sulfur redox kinetics hinder the cyclability and rate capability of lithium‐sulfur (Li‐S) batteries. Accelerating sulfur redox reactions is considered a promising way toward the capture and utilization of soluble sulfur species. Herein, topological insulator (TI) Bi2Te3 is reported as an electrocatalyst for accelerated sulfur electrochemistry. The findings indicate...
2D non‐layered materials (2DNLMs) featuring massive undercoordinated surface atoms and obvious lattice distortion have shown great promise in catalytic/electrocatalytic applications, but their controllable synthesis remains challenging. Here, a new type of ultrathin carbon‐wrapped titanium nitride nanomesh (TiN NM@C) is prepared using a rationally designed nano‐confinement topochemical conversion...