TiO2 Hollow Spheres Composed of Highly Crystalline Nanocrystals Exhibit Superior Lithium Storage Properties

Title
TiO2 Hollow Spheres Composed of Highly Crystalline Nanocrystals Exhibit Superior Lithium Storage Properties
Author(s)
송태섭Genqiang Zhang[Genqiang Zhang]Hao Bin Wu[Hao Bin Wu]Ungyu Paik[Ungyu Paik]Xiong Wen (David) Lou[Xiong Wen (David) Lou]
Keywords
HIGH-PERFORMANCE ANODE; LI-ION BATTERIES; NANOSTRUCTURED MATERIALS; ENERGY-CONVERSION; ACCURATE CONTROL; FACILE SYNTHESIS; MICROSPHERES; NANOMATERIALS; FABRICATION; CHALLENGES
Issue Date
201411
Publisher
WILEY-V C H VERLAG GMBH
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.53, no.46, pp.12590 - 12593
Abstract
While the synthesis of TiO2 hollow structures is well-established, in most cases it is particularly difficult to control the crystallization of TiO2 in solution or by calcination. As a result, TiO2 hollow structures do not really exhibit enhanced lithium storage properties. Herein, we report a simple and cost-effective template-assisted method to synthesize anatase TiO2 hollow spheres composed of highly crystalline nanocrystals, in which carbonaceous (C)spheres are chosen as the removable template. The release of gaseous species from the combustion of Cspheres may inhibit the growth of TiO2 crystallites so that instead small TiO2 nanocrystals are generated. The small size and high crystallinity of primary TiO2 nanoparticles and the high structural integrity of the hollow spheres gives rise to significant improvements in the cycling stability and rate performance of the TiO2 hollow spheres.
URI
http://hdl.handle.net/YU.REPOSITORY/30451http://dx.doi.org/10.1002/anie.201406476
ISSN
1433-7851
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공과대학 > 신소재공학부 > Articles
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