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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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. |
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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 |
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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. |
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School of Materials Science & Engineering |
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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 |
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Article |
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Deng, Jiyang Qi, Dianpeng Tang, Yuxin Zhang, Yanyan Leow, Wan Ru Wei, Jiaqi Yin, Shengyan Dong, Zhili Yazami, Rachid Chen, Zhong Chen, Xiaodong |
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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 |
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2014 |
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https://hdl.handle.net/10356/105294 http://hdl.handle.net/10220/20896 |
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