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Materials, Vol. 11, Pages 1021: Redox Activity of Sodium Vanadium Oxides towards Oxidation in Na Ion Batteries

Materials, Vol. 11, Pages 1021: Redox Activity of Sodium Vanadium Oxides towards Oxidation in Na Ion Batteries

Materials doi: 10.3390/ma11061021

Authors: Evan Adamczyk Muthaiyan Gnanavel Valerie Pralong

The search for new materials that could be used as electrode material for Na-ion batteries is one of the most challenging issues of today. Many transition metal oxide families as well as transition metal polyanionic frameworks have been proposed over the last five years. In this work, we report the sodium extraction from Na2V3O7, which is a tunnel type structure built of [V3O7]2−∞ nanotubes held by sodium ions. We report a reversible charge capacity of 80 mAh/g at 2.8 V vs. Na+/Na due to the V5+/V4+ redox activity. No oxygen redox activity has been observed for this material nor for the vanadium (5+) oxide Na4V2O7.

Authors:   Adamczyk, Evan ; Gnanavel, Muthaiyan ; Pralong, Valerie
Journal:   Materials
Volume:   11
edition:   6
Year:   2018
Pages:   1021
DOI:   10.3390/ma11061021
Publication date:   15-Jun-2018
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