Herein, we report a study on P-type layered sodium transition metal-based oxides with a general formula of NaxMO2 (M = Ni, Fe, Mn). We synthesize the materials via coprecipitation followed by annealing in air and rinsing with water, and we examine the electrodes as cathodes for sodium-ion batteries using a propylene carbonate-based electrolyte. We fully investigate the effect of the Ni-to-Fe ratio, annealing temperature, and sodium content on the electrochemical performances of the electrodes. The impact of these parameters on the structural and electrochemical properties of the materials is revealed by X-ray diffraction, scanning electron microscopy, and cyclic voltammetry, respectively. The suitability of this class of P-type materials for sodium battery application is finally demonstrated by cycling tests revealing an excellent electrochemical performance in terms of delivered capacity (i.e., about 200 mAh g–1) and charge–discharge efficiency (approaching 100%).

A comparative study of layered transition metal oxide cathodes for application in sodium-ion battery / Hasa, Ivana; Buchholz, Daniel; Passerini, Stefano; Hassoun, Jusef. - In: ACS APPLIED MATERIALS & INTERFACES. - ISSN 1944-8244. - 7:9(2015), pp. 5206-5212. [10.1021/am5080437]

A comparative study of layered transition metal oxide cathodes for application in sodium-ion battery

HASA, IVANA;PASSERINI, STEFANO
;
HASSOUN, JUSEF
2015

Abstract

Herein, we report a study on P-type layered sodium transition metal-based oxides with a general formula of NaxMO2 (M = Ni, Fe, Mn). We synthesize the materials via coprecipitation followed by annealing in air and rinsing with water, and we examine the electrodes as cathodes for sodium-ion batteries using a propylene carbonate-based electrolyte. We fully investigate the effect of the Ni-to-Fe ratio, annealing temperature, and sodium content on the electrochemical performances of the electrodes. The impact of these parameters on the structural and electrochemical properties of the materials is revealed by X-ray diffraction, scanning electron microscopy, and cyclic voltammetry, respectively. The suitability of this class of P-type materials for sodium battery application is finally demonstrated by cycling tests revealing an excellent electrochemical performance in terms of delivered capacity (i.e., about 200 mAh g–1) and charge–discharge efficiency (approaching 100%).
2015
battery; cathode; NaxMO2 (M = Ni,Fe,Mn); P2-P3-type layered structure; sodium-ion; Materials Science (all)
01 Pubblicazione su rivista::01a Articolo in rivista
A comparative study of layered transition metal oxide cathodes for application in sodium-ion battery / Hasa, Ivana; Buchholz, Daniel; Passerini, Stefano; Hassoun, Jusef. - In: ACS APPLIED MATERIALS & INTERFACES. - ISSN 1944-8244. - 7:9(2015), pp. 5206-5212. [10.1021/am5080437]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/849482
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