Boosted electrochemical performance of Na<inf>3</inf>V<inf>2</inf>(PO<inf>4</inf>)<inf>3</inf> at low temperature through synergistical F substitution and construction of interconnected nitrogen-doped carbonaceous network

Li, J; Li, Z; Tang, S; Wang, T; Pan, L; Wang, C

Boosted electrochemical performance of Na<inf>3</inf>V<inf>2</inf>(PO<inf>4</inf>)<inf>3</inf> at low temperature through synergistical F substitution and construction of interconnected nitrogen-doped carbonaceous network

Li, J Li, Z Tang, S Wang, T Pan, L Wang, C

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Journal of Materials Science and Technology, 2023, 150, pp. 159-167
Issue Date:: 2023-07-01

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Field	Value	Language
dc.contributor.author	Li, J
dc.contributor.author	Li, Z
dc.contributor.author	Tang, S
dc.contributor.author	Wang, T
dc.contributor.author	Pan, L
dc.contributor.author	Wang, C
dc.date.accessioned	2024-02-13T23:50:45Z
dc.date.available	2024-02-13T23:50:45Z
dc.date.issued	2023-07-01
dc.identifier.citation	Journal of Materials Science and Technology, 2023, 150, pp. 159-167
dc.identifier.issn	1005-0302
dc.identifier.uri	http://hdl.handle.net/10453/175660
dc.description.abstract	Benefitting from its unique NASICON-type framework, the Na3V2(PO4)3 (NVP) cathodes have aroused extensive interest and have been deemed as the promising cathode candidate for sodium-ion batteries (SIBs). Unfortunately, the poor electronic conductivity, combined with the undesirable volume variations, seriously hinders the practical application of NVP cathode, especially at low temperatures. Herein, a dual-strategy, F substitution accompanied by V vacancies and the construction of three-dimensional (3D) nitrogen-doped carbonaceous frameworks (NC), were employed for the NVP cathode (F-NVP/C@3DNC). The former can remarkably decrease the particle size and enhance Na+ migration capability, increasing the ionic conductivity. Meanwhile, the electronic connection and effective buffering can be obtained from the latter, strengthening the electrode integrity. Consequently, up to 100 cycles at 0.1 A g–1, a reversible capacity of 113.8 mAh g–1, approaching the theoretical value (117 mAh g–1), is demonstrated, accompanied by impressive capacity retentions at 1.0 (93.75% after 4800 cycles) and 20.0 A g–1 (92.7% after 1000 cycles). More importantly, even at –20 °C, a superior specific capacity (102.6 mAh g–1 after 100 cycles at 0.1 A g–1) and high capacity retention (86.6% at 20.0 A g–1 up to 1000 cycles) can still be obtained simultaneously. Significantly, the design of F-NVP/C@3DNC provides insights for the fabrication of polyanion cathodes for applications at low temperatures with modified structure stability and reaction kinetics.
dc.language	en
dc.publisher	Elsevier
dc.relation	National Natural Science Foundation of China21978251
dc.relation.ispartof	Journal of Materials Science and Technology
dc.relation.isbasedon	10.1016/j.jmst.2022.11.048
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0910 Manufacturing Engineering, 0912 Materials Engineering, 0913 Mechanical Engineering
dc.subject.classification	Materials
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4017 Mechanical engineering
dc.title	Boosted electrochemical performance of Na<inf>3</inf>V<inf>2</inf>(PO<inf>4</inf>)<inf>3</inf> at low temperature through synergistical F substitution and construction of interconnected nitrogen-doped carbonaceous network
dc.type	Journal Article
utslib.citation.volume	150
utslib.for	0910 Manufacturing Engineering
utslib.for	0912 Materials Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access	*
dc.date.updated	2024-02-13T23:50:44Z
pubs.publication-status	Published
pubs.volume	150

Abstract:

Benefitting from its unique NASICON-type framework, the Na3V2(PO4)3 (NVP) cathodes have aroused extensive interest and have been deemed as the promising cathode candidate for sodium-ion batteries (SIBs). Unfortunately, the poor electronic conductivity, combined with the undesirable volume variations, seriously hinders the practical application of NVP cathode, especially at low temperatures. Herein, a dual-strategy, F substitution accompanied by V vacancies and the construction of three-dimensional (3D) nitrogen-doped carbonaceous frameworks (NC), were employed for the NVP cathode (F-NVP/C@3DNC). The former can remarkably decrease the particle size and enhance Na+ migration capability, increasing the ionic conductivity. Meanwhile, the electronic connection and effective buffering can be obtained from the latter, strengthening the electrode integrity. Consequently, up to 100 cycles at 0.1 A g–1, a reversible capacity of 113.8 mAh g–1, approaching the theoretical value (117 mAh g–1), is demonstrated, accompanied by impressive capacity retentions at 1.0 (93.75% after 4800 cycles) and 20.0 A g–1 (92.7% after 1000 cycles). More importantly, even at –20 °C, a superior specific capacity (102.6 mAh g–1 after 100 cycles at 0.1 A g–1) and high capacity retention (86.6% at 20.0 A g–1 up to 1000 cycles) can still be obtained simultaneously. Significantly, the design of F-NVP/C@3DNC provides insights for the fabrication of polyanion cathodes for applications at low temperatures with modified structure stability and reaction kinetics.

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