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Synthesis of uniform layered protonated titanate hierarchical spheres and their transformation to anatase TiO2 for lithium-ion batteries.

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Synthesis of uniform layered protonated titanate hierarchical spheres and their transformation to anatase TiO2 for lithium-ion batteries.

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Title: Synthesis of uniform layered protonated titanate hierarchical spheres and their transformation to anatase TiO2 for lithium-ion batteries.
Author: Wu, Hao Bin.; Lou, David Xiong Wen.; Hng, Huey Hoon.
Copyright year: 2012
Abstract: Layered protonated titanates (LPTs), a class of interesting inorganic layered materials, have been widely studied because of their many unique properties and their use as precursors to many important TiO2-based functional materials. In this work, we have developed a facile solvothermal method to synthesize hierarchical spheres (HSs) assembled from ultrathin LPT nanosheets. These LPT hierarchical spheres possess a porous structure with a large specific surface area and high stability. Importantly, the size and morphology of the LPT hierarchical spheres are easily tunable by varying the synthesis conditions. These LPT HSs can be easily converted to anatase TiO2 HSs without significant structural alteration. Depending on the calcination atmosphere of air or N2, pure anatase TiO2 HSs or carbon-supported TiO2 HSs, respectively, can be obtained. Remarkably, both types of TiO2 HSs manifest excellent cyclability and rate capability when evaluated as anode materials for high-power lithium-ion batteries.
Subject: DRNTU::Science::Medicine::Biomedical engineering.
Type: Journal Article
Series/ Journal Title: Chemistry - a European journal
School: School of Chemical and Biomedical Engineering
Rights: © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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