Molecular Design Strategy for Ordered Mesoporous Stoichiometric Metal Oxide.

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "Molecular Design Strategy for Ordered Mesoporous Stoichiometric Metal Oxide."

Although the construction of ordered mesoporous materials has achieved great processes, it is still a challenge to synthesize ordered mesoporous stoichiometric metal oxides via the co-assembly method. Herein, we develop a molecular design strategy to construct ordered mesoporous Ti3+-doped Li4Ti5O12 nanocrystal frameworks (OM-Ti3+-Li4Ti5O12) via 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). We believe that this work can open a facile avenue to constructing stoichiometric ordered mesoporous oxides or minerals with highly crystalline frameworks.


Journal Details

This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773


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