Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105294
Title: Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
Authors: Deng, Jiyang
Qi, Dianpeng
Tang, Yuxin
Zhang, Yanyan
Leow, Wan Ru
Wei, Jiaqi
Yin, Shengyan
Dong, Zhili
Yazami, Rachid
Chen, Zhong
Chen, Xiaodong
Keywords: DRNTU::Science::Chemistry
Issue Date: 2014
Source: Tang, Y., Zhang, Y., Deng, J., Qi, D., Leow, W. R., Wei, J., et al. (2014). Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries. Angewandte chemie international edition, in press.
Series/Report no.: Angewandte chemie international edition
Abstract: The fundamental understanding of the relationship between the nanostructure of an electrode and its electrochemical performance is crucial for achieving high-performance lithium-ion batteries (LIBs). In this work, the relationship between the nanotubular aspect ratio and electrochemical performance of LIBs is elucidated for the first time. The stirring hydrothermal method was used to control the aspect ratio of viscous titanate nanotubes, which were used to fabricate additive-free TiO2-based electrode materials. We found that the battery performance at high charging/discharging rates is dramatically boosted when the aspect ratio is increased, due to the optimization of electronic/ionic transport properties within the electrode materials. The proof-of-concept LIBs comprising nanotubes with an aspect ratio of 265 can retain more than 86 % of their initial capacity over 6000 cycles at a high rate of 30 C. Such devices with supercapacitor-like rate performance and battery-like capacity herald a new paradigm for energy storage systems.
URI: https://hdl.handle.net/10356/105294
http://hdl.handle.net/10220/20896
ISSN: 1433-7851
DOI: 10.1002/anie.201406719
Rights: © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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