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Abstract:
Unique ordered TiO 2 superstructures with tunable morphology and crystalline phase were successfully prepared by the use of different counterions. Dumbbell-shaped rutile TiO 2 and nanorod-like rutile mesocrystals constructed from ultrathin nanowires, and quasi-octahedral anatase TiO 2 mesocrystals built from tiny nanoparticle subunits were achieved. Interestingly, the obtained anatase mesocrystals have a fine microporous structure and a large surface area. The influence of the counterions in the reaction system is discussed and possible mechanisms responsible for the formation of the unique ordered TiO 2 superstructures with different morphologies and crystalline phases are also proposed based on a series of experimental results. The obtained TiO 2 superstructures were used as anode materials in lithium ion batteries, and exhibited higher capacity and improved rate performance; this is attributed to the intrinsic characteristics of the mesoscopic TiO 2 superstructures, which have a single-crystal-like and porous nature. Shape of things to come: Unique ordered TiO 2 superstructures with tunable morphology and crystalline phase were successfully fabricated by the use of different counterions. The cells made of TiO 2 superstructures exhibited larger capacity and improved rate performance for lithium ion intercalation. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Chemistry - A European Journal
ISSN: 0947-6539
Year: 2012
Issue: 34
Volume: 18
Page: 10753-10760
5 . 8 3 1
JCR@2012
3 . 9 0 0
JCR@2023
JCR Journal Grade:1
CAS Journal Grade:2
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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