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The uncontrollable growth and uneven nucleation of lithium metal can be addressed by utilizing spatial confinement structures in conjunction with lithiophilic sites. However, their complex fabrication technique and the inhomogeneous dispersion of lithiophilic sites make the application ineffective. In this work, ultra‐uniformly dispersed SiOx seeds and defects are produced in situ to achieve the spatially...
A promising anode material for Li‐ion batteries, silicon (Si) suffers from volume expansion‐induced pulverization and solid electrolyte interface (SEI) instability. Microscale Si with high tap density and high initial Coulombic efficiency (ICE) has become a more anticipated choice, but it will exacerbate the above issues. In this work, the polymer polyhedral oligomeric silsesquioxane‐lithium bis (allylmalonato)...
Because of its high specific capacity, the silicon–graphite composite (SGC) is regarded as a promising anode for new‐generation lithium‐ion batteries. However, the frequently employed two‐section preparation process, including the modification of silicon seed and followed mixture with graphite, cannot ensure the uniform dispersion of silicon in the graphite matrix, resulting in a stress concentration...
Fast charging rate and large energy storage are key requirements for lithium‐ion batteries (LIBs) in electric vehicles. Developing electrode materials with high volumetric and gravimetric capacity that could be operated at a high rate is the most challenging problem. In this work, a general multi‐interface strategy toward densified carbon materials with enhanced comprehensive electrochemical performance...
Polyhedral oligomeric silsesquioxane (POSS) is a family of organic/inorganic hybrid materials with specific molecular symmetry, and shows great potential in the structural design of nanomaterials. Here, a “bottom‐up” strategy is designed to fabricate 3D interconnected Si/SiOx/C nanorings (NRs) via AlCl3‐assisted aluminothermic reduction using dodecaphenyl cage silsesquioxane (T12‐Ph) as the building...