The research into sodium-ion battery requires the development ofhigh voltage cathodic materials to compensate for the potential of the negative electrode materials which is usually higher than the lithium counterparts. In this framework, the polyanionic compound Na3V2(PO4)2F3 was prepared by an easy-to-scale-up carbothermal method and characterized to evaluate its electrochemical per- formances in halfcell vs. metallic sodium. The material shows a specific capacity (115 mAh g−1) close to the theoretical limit, good coulombic efficiency (>99%) and an excellent stability over several hundred cycles at high rate. High-loading free-standing electrodes were also tested, which showed interesting performances in terms of areal capacity and cyclability.

Pianta, N., Locatelli, D., Ruffo, R. (2021). Cycling properties of Na3V2(PO4)2F3 as positive material for sodium-ion batteries. IONICS, 27(5), 1853-1860 [10.1007/s11581-021-04015-y].

Cycling properties of Na3V2(PO4)2F3 as positive material for sodium-ion batteries

Nicolò Pianta
Primo
;
Riccardo Ruffo
Ultimo
2021

Abstract

The research into sodium-ion battery requires the development ofhigh voltage cathodic materials to compensate for the potential of the negative electrode materials which is usually higher than the lithium counterparts. In this framework, the polyanionic compound Na3V2(PO4)2F3 was prepared by an easy-to-scale-up carbothermal method and characterized to evaluate its electrochemical per- formances in halfcell vs. metallic sodium. The material shows a specific capacity (115 mAh g−1) close to the theoretical limit, good coulombic efficiency (>99%) and an excellent stability over several hundred cycles at high rate. High-loading free-standing electrodes were also tested, which showed interesting performances in terms of areal capacity and cyclability.
Articolo in rivista - Articolo scientifico
Fluorophosphates; NASICON; Positive electrodes; Self-standing electrodes; Sodium-ion battery;
English
1853
1860
8
Pianta, N., Locatelli, D., Ruffo, R. (2021). Cycling properties of Na3V2(PO4)2F3 as positive material for sodium-ion batteries. IONICS, 27(5), 1853-1860 [10.1007/s11581-021-04015-y].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/312942
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