ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

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Kosova N. V., Rezepova D. O. Sodium-based compounds as hosts for reversible intercalation of lithium ions. Electrochemical Energetics, 2016, vol. 16, iss. 3, pp. 92-99. DOI: 10.18500/1608-4039-2016-16-3-92-99, EDN: YQYJVP

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Sodium-based compounds as hosts for reversible intercalation of lithium ions

Kosova N. V., Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS
Rezepova Dar'ya Olegovna, Institute of Chemistry of a Solid body and Mechanochemistry of the Siberian Branch of RAS

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In this work, we studied the cycling behavior of Na2FeP2O7, Na2FePO4F and Na3V2(PO4)2F3 with triclinic, orthorhombic and tetragonal structure in hybrid Na/Li electrochemical cells with Li anode and LiPF6-based electrolyte. The occurrence of electrochemical Nа+/Li+ ion exchange was established resulting in the formation of the new mixed Na-Li compositions with different degree of exchange: ?NaLiFeP2O7, NaLiFePO4F and ? Na2.5Li0.5V2(PO4)2F3. All materials showed high capacity and stability upon cycling.

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