Novel structurally-stable Na-rich Na4V2O7 cathode material with high reversible capacity by utilization of anion redox activity
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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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 |
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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-1 after 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 Na4V2O7 is structurally-stable.
Citation Format(s)
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