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Carbon coated Na7Fe7(PO4)6F3: A novel intercalation cathode for sodium-ion batteries

Ramireddy, Thrinathreddy, Rahman, Md Mokhlesur, Sharma, Neeraj, Glushenkov, Alexey M. and Chen, Ying 2014, Carbon coated Na7Fe7(PO4)6F3: A novel intercalation cathode for sodium-ion batteries, Journal of power sources, vol. 271, pp. 497-503, doi: 10.1016/j.jbowsour.2014.08.039.

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Title Carbon coated Na7Fe7(PO4)6F3: A novel intercalation cathode for sodium-ion batteries
Formatted title Carbon coated Na7Fe7(PO4)6F3: A novel intercalation cathode for sodium-ion batteries
Author(s) Ramireddy, Thrinathreddy
Rahman, Md Mokhlesur
Sharma, Neeraj
Glushenkov, Alexey M.
Chen, YingORCID iD for Chen, Ying orcid.org/0000-0002-7322-2224
Journal name Journal of power sources
Volume number 271
Start page 497
End page 503
Total pages 7
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2014-12-20
ISSN 0378-7753
Keyword(s) Science & Technology
Physical Sciences
Technology
Electrochemistry
Energy & Fuels
Na7Fe7(PO4)(6)F-3/C composite cathode
Amorphous carbon
Hydrothermal synthesis
Solid state reaction
Sodium-ion battery
SYNCHROTRON X-RAY
ENERGY-STORAGE
LOW-COST
NA
STABILITY
NA2FEPO4F
NA3V2O2X(PO4)(2)F3-2X
DIFFRACTION
COMPOSITE
Summary Electrode materials are being developed to realise sodium-ion batteries that can provide energy storage solutions. Here, we develop amorphous carbon coated Na7Fe7(PO4)6F3, prepared by combining hydrothermal and solid state reaction methods, as an insertion electrode for sodium-ion batteries applications. Na7Fe7(PO4)6F3 particles are surrounded by a thin layer (∼1.5–2 nm) of amorphous carbon. The Na7Fe7(PO4)6F3/C composite cathode undergoes reversible sodium intercalation/de-intercalation with an average operational potential of ∼3.0 V (vs Na+/Na). This cathode has a capacity of 65 mA h g−1 at 100 mA g−1 current after 60 cycles and features twice higher capacity than that of an uncoated Na7Fe7(PO4)6F3 sample. Therefore, the carbon-coated Na7Fe7(PO4)6F3 composite presents feasible sodium intercalation/de-intercalation capacity, offering possibilities for developing a low cost, high performance sodium-ion battery positive electrode.
Language eng
DOI 10.1016/j.jbowsour.2014.08.039
Field of Research 100708 Nanomaterials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID DP130102311
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069713

Document type: Journal Article
Collection: Institute for Frontier Materials
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