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Type: Journal article
Title: 1D sub-nanotubes with anatase/bronze TiO₂ nanocrystal wall for high-rate and long-life sodium-ion batteries
Other Titles: 1D sub-nanotubes with anatase/bronze TiO(2) nanocrystal wall for high-rate and long-life sodium-ion batteries
Author: Chen, B.
Meng, Y.
Xie, F.
He, F.
He, C.
Davey, K.
Zhao, N.
Qiao, S.Z.
Citation: Advanced Materials, 2018; 30(46):1-7
Publisher: Wiley Online Library
Issue Date: 2018
ISSN: 0935-9648
Statement of
Biao Chen, Yuhuan Meng, Fangxi Xie, Fang He, Chunnian He, Kenneth Davey, Naiqin Zhao, Shi‐Zhang Qiao
Abstract: The development of 1D nanostructures with enhanced material properties has been an attractive endeavor for applications in energy and environmental fields, but it remains a major research challenge. Herein, this work demonstrates a simple, gel-derived method to synthesize uniform 1D elongated sub-nanotubes with an anatase/bronze TiO2 nanocrystal wall (TiO2 SNTs). The transformation mechanism of TiO2 SNTs is studied by various ex situ characterization techniques. The resulting 1D nanostructures exhibit, synchronously, a high aspect ratio, open tubular interior, and anatase/bronze nanocrystal TiO2 wall. This results in excellent properties of electron/ion transport and reaction kinetics. Consequently, as an anode material for sodium-ion batteries (SIBs), the TiO2 SNTs display an ultrastable long-life cycling stability with a capacity of 107 mAh g-1 at 16 C after 4000 cycles and a high-rate capacity of 94 mAh g-1 at 32 C. This a high-rate and long-life performance is superior to any report on pure TiO2 for SIBs. This work provides new fundamental information for the design and fabrication of inorganic structures for energy and environmental applications.
Keywords: 1D sub-nanotubes
anatase/bronze TiO2
open interior
sodium-ion batteries
Rights: © 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
DOI: 10.1002/adma.201804116
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Appears in Collections:Aurora harvest 3
Chemical Engineering publications

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