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...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/138621 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-138621 |
---|---|
record_format |
dspace |
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 |
_version_ |
1787136500614299648 |