Electrochemical Performance of Na3V2(PO4)2F3 Electrode Material in a Symmetric Cell

A NASICON-based Na3V2(PO4)2F3 (NVPF) cathode material is reported herein as a potential symmetric cell electrode material. The symmetric cell was active from 0 to 3.5 V and showed a cap...

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Autores principales:	Jeffin James Abraham, Buzaina Moossa, Hanan Abdurehman Tariq, Ramazan Kahraman, Siham Al-Qaradawi, R. A. Shakoor
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fluorophosphate symmetric cell bipolar charge/discharge capacity CV GITT Biology (General) QH301-705.5 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/0ff8443c33fb4d688529711c8ec55d90
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spelling	oai:doaj.org-article:0ff8443c33fb4d688529711c8ec55d902021-11-11T17:26:39ZElectrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell10.3390/ijms2221120451422-00671661-6596https://doaj.org/article/0ff8443c33fb4d688529711c8ec55d902021-11-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/21/12045https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067A NASICON-based Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> (NVPF) cathode material is reported herein as a potential symmetric cell electrode material. The symmetric cell was active from 0 to 3.5 V and showed a capacity of 85 mAh/g at 0.1 C. With cycling, the NVPF symmetric cell showed a very long and stable cycle life, having a capacity retention of 61% after 1000 cycles at 1 C. The diffusion coefficient calculated from cyclic voltammetry (CV) and the galvanostatic intermittent titration technique (GITT) was found to be ~10<sup>−9</sup>–10<sup>−11</sup>, suggesting a smooth diffusion of Na<sup>+</sup> in the NVPF symmetric cell. The electrochemical impedance spectroscopy (EIS) carried out during cycling showed increases in bulk resistance, solid electrolyte interphase (SEI) resistance, and charge transfer resistance with the number of cycles, explaining the origin of capacity fade in the NVPF symmetric cell. Finally, the postmortem analysis of the symmetric cell after 1000 cycles at a 1 C rate indicated that the intercalation/de-intercalation of sodium into/from the host structure occurred without any major structural destabilization in both the cathode and anode. However, there was slight distortion in the cathode structure observed, which resulted in capacity loss of the symmetric cell. The promising electrochemical performance of NVPF in the symmetric cell makes it attractive for developing long-life and cost-effective batteries.Jeffin James AbrahamBuzaina MoossaHanan Abdurehman TariqRamazan KahramanSiham Al-QaradawiR. A. ShakoorMDPI AGarticlefluorophosphatesymmetric cellbipolarcharge/discharge capacityCVGITTBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 12045, p 12045 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluorophosphate symmetric cell bipolar charge/discharge capacity CV GITT Biology (General) QH301-705.5 Chemistry QD1-999
spellingShingle	fluorophosphate symmetric cell bipolar charge/discharge capacity CV GITT Biology (General) QH301-705.5 Chemistry QD1-999 Jeffin James Abraham Buzaina Moossa Hanan Abdurehman Tariq Ramazan Kahraman Siham Al-Qaradawi R. A. Shakoor Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell
description	A NASICON-based Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> (NVPF) cathode material is reported herein as a potential symmetric cell electrode material. The symmetric cell was active from 0 to 3.5 V and showed a capacity of 85 mAh/g at 0.1 C. With cycling, the NVPF symmetric cell showed a very long and stable cycle life, having a capacity retention of 61% after 1000 cycles at 1 C. The diffusion coefficient calculated from cyclic voltammetry (CV) and the galvanostatic intermittent titration technique (GITT) was found to be ~10<sup>−9</sup>–10<sup>−11</sup>, suggesting a smooth diffusion of Na<sup>+</sup> in the NVPF symmetric cell. The electrochemical impedance spectroscopy (EIS) carried out during cycling showed increases in bulk resistance, solid electrolyte interphase (SEI) resistance, and charge transfer resistance with the number of cycles, explaining the origin of capacity fade in the NVPF symmetric cell. Finally, the postmortem analysis of the symmetric cell after 1000 cycles at a 1 C rate indicated that the intercalation/de-intercalation of sodium into/from the host structure occurred without any major structural destabilization in both the cathode and anode. However, there was slight distortion in the cathode structure observed, which resulted in capacity loss of the symmetric cell. The promising electrochemical performance of NVPF in the symmetric cell makes it attractive for developing long-life and cost-effective batteries.
format	article
author	Jeffin James Abraham Buzaina Moossa Hanan Abdurehman Tariq Ramazan Kahraman Siham Al-Qaradawi R. A. Shakoor
author_facet	Jeffin James Abraham Buzaina Moossa Hanan Abdurehman Tariq Ramazan Kahraman Siham Al-Qaradawi R. A. Shakoor
author_sort	Jeffin James Abraham
title	Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell
title_short	Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell
title_full	Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell
title_fullStr	Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell
title_full_unstemmed	Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell
title_sort	electrochemical performance of na<sub>3</sub>v<sub>2</sub>(po<sub>4</sub>)<sub>2</sub>f<sub>3</sub> electrode material in a symmetric cell
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0ff8443c33fb4d688529711c8ec55d90
work_keys_str_mv	AT jeffinjamesabraham electrochemicalperformanceofnasub3subvsub2subposub4subsub2subfsub3subelectrodematerialinasymmetriccell AT buzainamoossa electrochemicalperformanceofnasub3subvsub2subposub4subsub2subfsub3subelectrodematerialinasymmetriccell AT hananabdurehmantariq electrochemicalperformanceofnasub3subvsub2subposub4subsub2subfsub3subelectrodematerialinasymmetriccell AT ramazankahraman electrochemicalperformanceofnasub3subvsub2subposub4subsub2subfsub3subelectrodematerialinasymmetriccell AT sihamalqaradawi electrochemicalperformanceofnasub3subvsub2subposub4subsub2subfsub3subelectrodematerialinasymmetriccell AT rashakoor electrochemicalperformanceofnasub3subvsub2subposub4subsub2subfsub3subelectrodematerialinasymmetriccell
_version_	1718432044916146176

Electrochemical Performance of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> Electrode Material in a Symmetric Cell

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