Jump to main content
Jump to site search


High-energy nanostructured Na3V2(PO4)2O1.6F1.4 cathodes for sodium-ion batteries and a new insight into their redox chemistry

Author affiliations

Abstract

A microwave-assisted solvothermal procedure is employed for the rapid fabrication of nanostructured Na3V2(PO4)2O1.6F1.4 with a space group of I4/mmm. This Na3V2(PO4)2O1.6F1.4 exhibits a high energy density (518 W h kg−1) and impressive power performance (11 127 W kg−1 while retaining an energy density of 306 W h kg−1) in Na-ion coin cells. Furthermore, the redox chemistry of Na3V2(PO4)2O1.6F1.4 was investigated by combination of electron paramagnetic resonance and X-ray diffraction techniques. The results substantiate that: (i) both V3+/V4+ and V4+/V5+ couples are active in this Na3V2(PO4)2O1.6F1.4, corresponding to a total amount of 2 electrons transferred per formula unit; (ii) the Na extraction/intercalation process is mainly a solid-solution mechanism.

Graphical abstract: High-energy nanostructured Na3V2(PO4)2O1.6F1.4 cathodes for sodium-ion batteries and a new insight into their redox chemistry

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Jan 2018, accepted on 03 Apr 2018 and first published on 05 Apr 2018


Article type: Paper
DOI: 10.1039/C8TA00568K
Citation: J. Mater. Chem. A, 2018, Advance Article
  •   Request permissions

    High-energy nanostructured Na3V2(PO4)2O1.6F1.4 cathodes for sodium-ion batteries and a new insight into their redox chemistry

    C. Li, M. Shen, B. Hu, X. Lou, X. Zhang, W. Tong and B. Hu, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA00568K

Search articles by author

Spotlight

Advertisements