Influence of carbon polymorphism towards improved sodium storage properties of Na3V2O2x (PO4)(2)F3-2x

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The effects of 10 wt.% super P carbon, multiwalled carbon nanotubes (MWCNTs), and reduced graphene oxide (rGO) on particles size and electrochemical properties of Na3V2O2x (PO4)(2)F3-2x cathode material were studied. Among these three carbon polymorphs, using MWCNT in composite is effective to obtain low particle size and enhanced electrochemical properties of Na3V2O2x (PO4)(2)F3-2x . While using rGO to make the composite, the particle size becomes quite big, leading a smaller surface contact area with the electrolytes and thereby resulting in poor cyclability. Na3V2O2x (PO4)(2)F3-2x -MWCNT composite shows a high capacity of 98 mAh g(-1)at 0.1 C rate for 100 cycles, and further, it exhibits a stable capacity of 89 mAh g(-1) at 0.2 C rate vs. NaTi2(PO4)(3)-MWCNT in full cell configuration.
Publisher
SPRINGER
Issue Date
2017-01
Language
English
Article Type
Article
Keywords

NA-ION BATTERIES; HIGH-RATE CATHODE; LITHIUM-ION; ENERGY-STORAGE; ELECTROCHEMICAL PROPERTIES; PERFORMANCE; GRAPHENE; FLUOROPHOSPHATE; NA3V2(PO4)(3); ANODE

Citation

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, v.21, no.1, pp.223 - 232

ISSN
1432-8488
DOI
10.1007/s10008-016-3365-6
URI
http://hdl.handle.net/10203/220918
Appears in Collection
MS-Journal Papers(저널논문)
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