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With an extremely high theoretical energy density, poly(ethylene oxide) (PEO)‐based solid‐state lithium‐sulfur (Li‐S) batteries are emerging as one of the most feasible and safest battery storage systems. However, the long‐term cycling performance is severely impeded by polysulfides (Li2Sn, n = 4–8) shuttling and terrible electrode passivation from the electronic insulating Li2S. Here, a novel cathode...
Lithium–sulfur batteries, as one of promising next‐generation energy storage devices, hold great potential to meet the demands of electric vehicles and grids due to their high specific energy. However, the sluggish kinetics and the inevitable “shuttle effect” severely limit the practical application of this technology. Recently, design of composite cathode with effective catalysts has been reported...
Sodium‐ion batteries have huge potential in large‐scale energy storage applications. Layered Fe‐based oxides are one of the desirable cathode materials due to abundance in the earth crust and high activity in electrochemical processes. However, Fe‐ion migration to Na layers is one of the major hurdles leading to irreversible structural degradation. Herein, it is revealed that distinct Fe‐ion migration...
The practical applications of lithium–sulfur (Li–S) batteries are seriously limited by the undesirable polysulfide shuttling and lithium dendrite growth. Herein, a multifunctional membrane is designed and prepared by coating a lithiated Nafion (Li@Nafion) layer and an Al2O3 layer on the two sides of a routine polymer membrane (polypropylene/polyethylene/polypropylene, PEP). The Li@Nafion layer faced...
Ordered porous RuO2 materials with various pore structure parameters are prepared via a hard‐template method and are used as the carbon‐free cathodes for Li‐O2 batteries under the voltage cutoff cycle mode. The influences of pore structure parameters of porous RuO2 on electrochemical performance are systematically studied. Results indicate that specific surface area and pore size determine the specific...
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