Synthesis of LiTiO₂ Nanocrystals/Ordered Mesoporous Carbon Composite Hosts for High‐Performance Lithium–Sulfur Batteries

Metal oxide nanocrystals/mesoporous carbon composite materials are promising in the energy storage field. However, construction of stoichiometric ternary nanocrystals-functionalized mesoporous remains a great challenge. Herein, synthesis ultradispersed and ultrasmall LiTiO2 nanocrystals/ordered composites via chelation-mediated multicomponent coassembly strategy is reported. In this case, self-assembly into ordered mesostructures crystallization nanoparticle processes can be decoupled by molecular chelate where citrate ligands effectively inhibit hydrolysis phase separation metal precursors confine nanocrystals without aggregation. The obtained 33%-LiTiO2–OMC present high specific surface area (≈912 m2 g−1), large pore volume (≈0.62 cm3 uniform size (≈4.1 nm), (≈3 nm). When loading 60% sulfur, exhibit reversible capacity (966 mAh g−1 after 100 cycles at 0.5C), an excellent rate (700 5C), long-term cycling performance (63% retention 1000 5C). This method very simple reproducible, which paves new way for design functional materials.