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

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
	Check@CityULib
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; Wu, Jimmy; Sharma, Neeraj; Gu, Qinfen; Johannessen, Bernt; Yu, Denis Y. W.

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

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 . https://doi.org/10.1039/d0cc02816a

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