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Title: A practical high-energy cathode for sodium-ion batteries based on uniform P2-Na0.7 CoO2 microspheres
Authors: Fang, Yongjin
Yu, Xin-Yao
Lou, David Xiong Wen
Keywords: Engineering::Chemical engineering
Issue Date: 2017
Source: 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
Journal: Angewandte Chemie International Edition
Abstract: 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.
ISSN: 1433-7851
DOI: 10.1002/anie.201702024
Rights: © 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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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