A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres

Layered metal oxides have attracted increasing attention as cathode materials for sodium-ion batteries (SIBs). However, the application of such cathode materials is still hindered by their poor rate capability and cycling stability. Here, a facile self-templated strategy is developed to synthesize u...

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Main Authors: Fang, Yongjin, Yu, Xin-Yao, Lou, David Xiong Wen
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/138621
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1386212023-12-29T06:47:06Z A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres Fang, Yongjin Yu, Xin-Yao Lou, David Xiong Wen School of Chemical and Biomedical Engineering Engineering::Chemical engineering Cathode Materials Layered Metal Oxides Layered metal oxides have attracted increasing attention as cathode materials for sodium-ion batteries (SIBs). However, the application of such cathode materials is still hindered by their poor rate capability and cycling stability. Here, a facile self-templated strategy is developed to synthesize uniform P2-Na0.7 CoO2 microspheres. Due to the unique microsphere structure, the contact area of the active material with electrolyte is minimized. As expected, the P2-Na0.7 CoO2 microspheres exhibit enhanced electrochemical performance for sodium storage in terms of high reversible capacity (125 mAh g-1 at 5 mA g-1 ), superior rate capability and long cycle life (86 % capacity retention over 300 cycles). Importantly, the synthesis method can be easily extended to synthesize other layered metal oxide (P2-Na0.7 MnO2 and O3-NaFeO2 ) microspheres. NRF (Natl Research Foundation, S’pore) Accepted version 2020-05-11T04:46:02Z 2020-05-11T04:46:02Z 2017 Journal Article Fang, Y., Yu, X.-Y., & Lou, D. X. W. (2017). A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres. Angewandte Chemie International Edition, 56(21), 5801-5805. doi:10.1002/anie.201702024 1433-7851 https://hdl.handle.net/10356/138621 10.1002/anie.201702024 28436081 2-s2.0-85018830653 21 56 5801 5805 en Angewandte Chemie International Edition © 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Angewandte Chemie International Edition and is made available with permission of Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Chemical engineering
Cathode Materials
Layered Metal Oxides
spellingShingle Engineering::Chemical engineering
Cathode Materials
Layered Metal Oxides
Fang, Yongjin
Yu, Xin-Yao
Lou, David Xiong Wen
A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
description Layered metal oxides have attracted increasing attention as cathode materials for sodium-ion batteries (SIBs). However, the application of such cathode materials is still hindered by their poor rate capability and cycling stability. Here, a facile self-templated strategy is developed to synthesize uniform P2-Na0.7 CoO2 microspheres. Due to the unique microsphere structure, the contact area of the active material with electrolyte is minimized. As expected, the P2-Na0.7 CoO2 microspheres exhibit enhanced electrochemical performance for sodium storage in terms of high reversible capacity (125 mAh g-1 at 5 mA g-1 ), superior rate capability and long cycle life (86 % capacity retention over 300 cycles). Importantly, the synthesis method can be easily extended to synthesize other layered metal oxide (P2-Na0.7 MnO2 and O3-NaFeO2 ) microspheres.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Fang, Yongjin
Yu, Xin-Yao
Lou, David Xiong Wen
format Article
author Fang, Yongjin
Yu, Xin-Yao
Lou, David Xiong Wen
author_sort Fang, Yongjin
title A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
title_short A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
title_full A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
title_fullStr A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
title_full_unstemmed A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
title_sort practical high-energy cathode for sodium-ion batteries based on uniform p2-na0.7 coo2 microspheres
publishDate 2020
url https://hdl.handle.net/10356/138621
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