Molecular Design Strategy for Ordered Mesoporous Stoichiometric Metal Oxide

A molecular design strategy is used to construct ordered mesoporous Ti³⁺‐doped Li₄Ti₅O₁₂ nanocrystal frameworks (OM‐Ti³⁺‐Li₄Ti₅O₁₂) by the stoichiometric cationic coordination assembly process. Ti⁴⁺/Li⁺‐citrate chelate is designed as a new molecular precursor, in which the citrate can not only stoichiometrically coordinate Ti⁴⁺ with Li⁺ homogeneously at the atomic scale, but also interact strongly with the PEO segments in the Pluronic F127. These features make the co‐assembly and crystallization process more controllable, thus benefiting for the formation of the ordered mesostructures. The resultant OM‐Ti³⁺‐Li₄Ti₅O₁₂ shows excellent rate (143 mAh g^?1 at 30 C) and cycling performances (<0.005 % fading per cycle). This work could open a facile avenue to constructing stoichiometric ordered mesoporous oxides or minerals with highly crystalline frameworks.