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Effect of Mixed Li+/Na+-ion Electrolyte on Electrochemical Performance of Na4Fe3(PO4)2P2O7 in Hybrid Batteries

Institute of Solid State Chemistry and Mechanochemistry SB RAS, 18 Kutateladze, 630128 Novosibirsk, Russia
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Batteries 2019, 5(2), 39; https://doi.org/10.3390/batteries5020039
Received: 14 March 2019 / Revised: 2 April 2019 / Accepted: 4 April 2019 / Published: 11 April 2019
(This article belongs to the Special Issue Advanced Hybrid-Ion Batteries)
The mixed sodium-iron ortho-pyrophosphate Na4Fe3(PO4)2P2O7 (NFPP) is a promising Na-containing cathode material with the highest operating voltage among sodium framework structured materials. It operates both in Na and Li electrochemical cells. When cycled in a hybrid Li/Na cell, a competitive co-intercalation of the Li+ and Na+ ions occurs at the cathode side. The present study shows that this process can be tuned by changing the concentration of the Na+ ions in the mixed Li+/Na+-ion electrolyte and current density. It is shown that if the Na concentration in the electrolyte increases, the specific capacity of NFPP also increases and its high-rate capability is significantly improved. View Full-Text
Keywords: Na4Fe3(PO4)2P2O7; hybrid Li/Na cell; mixed Li+/Na+-ion electrolyte; cycling Na4Fe3(PO4)2P2O7; hybrid Li/Na cell; mixed Li+/Na+-ion electrolyte; cycling
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MDPI and ACS Style

Kosova, N.V.; Shindrov, A.A. Effect of Mixed Li+/Na+-ion Electrolyte on Electrochemical Performance of Na4Fe3(PO4)2P2O7 in Hybrid Batteries. Batteries 2019, 5, 39. https://doi.org/10.3390/batteries5020039

AMA Style

Kosova NV, Shindrov AA. Effect of Mixed Li+/Na+-ion Electrolyte on Electrochemical Performance of Na4Fe3(PO4)2P2O7 in Hybrid Batteries. Batteries. 2019; 5(2):39. https://doi.org/10.3390/batteries5020039

Chicago/Turabian Style

Kosova, Nina V.; Shindrov, Alexander A. 2019. "Effect of Mixed Li+/Na+-ion Electrolyte on Electrochemical Performance of Na4Fe3(PO4)2P2O7 in Hybrid Batteries" Batteries 5, no. 2: 39. https://doi.org/10.3390/batteries5020039

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