Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries

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...

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Main Authors: Deng, Jiyang, Qi, Dianpeng, Tang, Yuxin, Zhang, Yanyan, Leow, Wan Ru, Wei, Jiaqi, Yin, Shengyan, Dong, Zhili, Yazami, Rachid, Chen, Zhong, Chen, Xiaodong
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/105294
http://hdl.handle.net/10220/20896
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1052942020-06-01T10:26:47Z Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries Deng, Jiyang Qi, Dianpeng Tang, Yuxin Zhang, Yanyan Leow, Wan Ru Wei, Jiaqi Yin, Shengyan Dong, Zhili Yazami, Rachid Chen, Zhong Chen, Xiaodong School of Materials Science & Engineering DRNTU::Science::Chemistry 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. 2014-09-15T08:48:10Z 2019-12-06T21:48:51Z 2014-09-15T08:48:10Z 2019-12-06T21:48:51Z 2014 2014 Journal Article 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. 1433-7851 https://hdl.handle.net/10356/105294 http://hdl.handle.net/10220/20896 10.1002/anie.201406719 en Angewandte chemie international edition © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Chemistry
spellingShingle DRNTU::Science::Chemistry
Deng, Jiyang
Qi, Dianpeng
Tang, Yuxin
Zhang, Yanyan
Leow, Wan Ru
Wei, Jiaqi
Yin, Shengyan
Dong, Zhili
Yazami, Rachid
Chen, Zhong
Chen, Xiaodong
Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
description 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.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Deng, Jiyang
Qi, Dianpeng
Tang, Yuxin
Zhang, Yanyan
Leow, Wan Ru
Wei, Jiaqi
Yin, Shengyan
Dong, Zhili
Yazami, Rachid
Chen, Zhong
Chen, Xiaodong
format Article
author Deng, Jiyang
Qi, Dianpeng
Tang, Yuxin
Zhang, Yanyan
Leow, Wan Ru
Wei, Jiaqi
Yin, Shengyan
Dong, Zhili
Yazami, Rachid
Chen, Zhong
Chen, Xiaodong
author_sort Deng, Jiyang
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
title_short Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
title_full Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
title_fullStr Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
title_full_unstemmed Unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
title_sort unravelling the correlation between the aspect ratio of nanotubular structures and their electrochemical performance to achieve high-rate and long-life lithium-ion batteries
publishDate 2014
url https://hdl.handle.net/10356/105294
http://hdl.handle.net/10220/20896
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