Na 3 V 2 O 2x (PO 4 ) 2 F 3−2x : a stable and high-voltage cathode material for aqueous sodium-ion batteries with high energy density

The reversible electrochemical activity of the Na 3 V 2 O 2x (PO 4 ) 2 F 3−2x compound in an aqueous solution is reported for the first time. Na 3 V 2 O 2x (PO 4 ) 2 F 3−2x with multi-walled carbon nanotubes (MWCNTs) exhibits a long-term stability for up to 1100 cycles in aqueous electrolytes. Two d...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2015, Vol.3 (12), p.6271-6275
Main Authors: Kumar, P. Ramesh, Jung, Young Hwa, Lim, Chek Hai, Kim, Do Kyung
Format: Article
Language:English
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Summary:The reversible electrochemical activity of the Na 3 V 2 O 2x (PO 4 ) 2 F 3−2x compound in an aqueous solution is reported for the first time. Na 3 V 2 O 2x (PO 4 ) 2 F 3−2x with multi-walled carbon nanotubes (MWCNTs) exhibits a long-term stability for up to 1100 cycles in aqueous electrolytes. Two different types of Na-ion full-cells demonstrate the feasibility of the Na 3 V 2 O 2x (PO 4 ) 2 F 3−2x /MWCNT composite as a cathode for aqueous sodium-ion batteries. A high full-cell voltage of 1.7 V and a high energy density of 84 W h kg −1 were achieved using Zn metal as an anode.
ISSN:2050-7488
2050-7496
DOI:10.1039/C5TA00980D