Novel structurally-stable Na-rich Na4V2O7 cathode material with high reversible capacity by utilization of anion redox activity

Bizhe Su; Hanqin Liang; Junnan Liu; Jimmy Wu; Neeraj Sharma; Qinfen Gu; Bernt Johannessen; Denis Y. W. Yu

doi:10.1039/d0cc02816a

Author(s)

Hanqin Liang
Junnan Liu
Jimmy Wu
Neeraj Sharma
Qinfen Gu
Bernt Johannessen
Denis Y. W. Yu

Related Research Unit(s)

School of Energy and Environment

Detail(s)

Original language	English
Pages (from-to)	8245-8248
Journal / Publication	Chemical communications (Cambridge, England)
Volume	56
Issue number	59
Online published	15 Jun 2020
Publication status	Published - 28 Jul 2020

Link(s)

DOI	DOI https://doi.org/10.1039/d0cc02816a Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85088609661&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(0216a08c-1a7a-4152-b897-f5ee234695f2).html

Abstract

A sodium-rich vanadium compound, Na₄V₂O₇, is investigated as a cathode material for sodium-ion batteries, which delivers a high reversible capacity of 194 mA h g^-1after activating to 4.7 V. By limiting the cut-off voltage to 4.4 V, a good capacity retention of 93% after 50 cycles is achieved. The material exhibits a negligible volume variation of 1.04% during Na⁺(de-)intercalation, demonstrating that Na₄V₂O₇is structurally-stable.

Citation Format(s)

[ RIS ] [ BibTeX ]

Novel structurally-stable Na-rich Na₄V₂O₇ cathode material with high reversible capacity by utilization of anion redox activity. / Su, Bizhe; Liang, Hanqin; Liu, Junnan et al.

In: Chemical communications (Cambridge, England), Vol. 56, No. 59, 28.07.2020, p. 8245-8248 .

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Su, B, Liang, H, Liu, J, Wu, J, Sharma, N, Gu, Q, Johannessen, B & Yu, DYW 2020, 'Novel structurally-stable Na-rich Na₄V₂O₇ cathode material with high reversible capacity by utilization of anion redox activity', Chemical communications (Cambridge, England), vol. 56, no. 59, pp. 8245-8248 . https://doi.org/10.1039/d0cc02816a

Su, B., Liang, H., Liu, J., Wu, J., Sharma, N., Gu, Q., Johannessen, B., & Yu, D. Y. W. (2020). Novel structurally-stable Na-rich Na₄V₂O₇ cathode material with high reversible capacity by utilization of anion redox activity. Chemical communications (Cambridge, England), 56(59), 8245-8248 . https://doi.org/10.1039/d0cc02816a

Su B, Liang H, Liu J, Wu J, Sharma N, Gu Q et al. Novel structurally-stable Na-rich Na₄V₂O₇ cathode material with high reversible capacity by utilization of anion redox activity. Chemical communications (Cambridge, England). 2020 Jul 28;56(59):8245-8248 . Epub 2020 Jun 15. doi: 10.1039/d0cc02816a

Su, Bizhe ; Liang, Hanqin ; Liu, Junnan et al. / Novel structurally-stable Na-rich Na₄V₂O₇ cathode material with high reversible capacity by utilization of anion redox activity. In: Chemical communications (Cambridge, England). 2020 ; Vol. 56, No. 59. pp. 8245-8248 .