Preparation of a Novel g-C<inf>3</inf>N<inf>4</inf>/Sn/N-doped Carbon Composite for Sodium Storage

Liu, Z; Li, J; Yang, J; Ma, H; Wang, C; Guo, X; Wang, G

Preparation of a Novel g-C<inf>3</inf>N<inf>4</inf>/Sn/N-doped Carbon Composite for Sodium Storage

Liu, Z Li, J Yang, J Ma, H Wang, C Guo, X

Wang, G

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Publisher:: HIGHER EDUCATION PRESS
Publication Type:: Journal Article
Citation:: Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities, 2021, 42, (2), pp. 633-642
Issue Date:: 2021-02-10

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Field	Value	Language
dc.contributor.author	Liu, Z
dc.contributor.author	Li, J
dc.contributor.author	Yang, J
dc.contributor.author	Ma, H
dc.contributor.author	Wang, C
dc.contributor.author	Guo, X https://orcid.org/0000-0001-7771-0463
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.date.accessioned	2022-02-14T21:34:58Z
dc.date.available	2022-02-14T21:34:58Z
dc.date.issued	2021-02-10
dc.identifier.citation	Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities, 2021, 42, (2), pp. 633-642
dc.identifier.issn	0251-0790
dc.identifier.uri	http://hdl.handle.net/10453/154506
dc.description.abstract	Sodium-ion batteries(SIBs) based on Sn-based anodes have attracted increasing attention due to their high theoretical capacity(847 mA•h/g), high electrical conductivity and suitable operation potential. Unfortunately, the huge structural change upon cycling often causes particle pulverization and rapid capacity decay. In this work, ultrafine Sn nanoparticles with dual protection from graphitic carbon nitride(g-C3N4) and polydopamine derived N-doped carbon(g-C3N4/Sn/NC) were successfully fabricated through a designed strategy. Generally, the introduction of g-C3N4 and NC can dramatically accelerate the transport of electrons/ions as well as the reaction dynamics, thus contributing to the alloying reaction between Sn and Na+. Importantly, the ultrafine Sn as well as the dual buffering matrices can efficiently maintain the integrity of electrode upon cycling, guaranteeing the superior electrochemical performance. Benefitting from the structural advantages inhe-rited from the ultrafine Sn nanoparticles and dual protection scaffolds, the as-obtained g-C3N4/Sn/NC displays excellent sodium storage performances, with high reversible capacity(450.7 mA•h/g at 0.5 A/g after 100 cycles), remarkable rate capability(388.3 mA•h/g at 1.0 A/g) and stable long-term cycling stability(363.3 mA•h/g after 400 cycles at 1.0 A/g).
dc.language	English
dc.publisher	HIGHER EDUCATION PRESS
dc.relation.ispartof	Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities
dc.relation.isbasedon	10.7503/cjcu20200711
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	03 Chemical Sciences
dc.subject.classification	General Chemistry
dc.title	Preparation of a Novel g-C<inf>3</inf>N<inf>4</inf>/Sn/N-doped Carbon Composite for Sodium Storage
dc.type	Journal Article
utslib.citation.volume	42
utslib.for	03 Chemical Sciences
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
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access	*
dc.date.updated	2022-02-14T21:34:56Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	42
utslib.citation.issue	2

Abstract:

Sodium-ion batteries(SIBs) based on Sn-based anodes have attracted increasing attention due to their high theoretical capacity(847 mA•h/g), high electrical conductivity and suitable operation potential. Unfortunately, the huge structural change upon cycling often causes particle pulverization and rapid capacity decay. In this work, ultrafine Sn nanoparticles with dual protection from graphitic carbon nitride(g-C3N4) and polydopamine derived N-doped carbon(g-C3N4/Sn/NC) were successfully fabricated through a designed strategy. Generally, the introduction of g-C3N4 and NC can dramatically accelerate the transport of electrons/ions as well as the reaction dynamics, thus contributing to the alloying reaction between Sn and Na+. Importantly, the ultrafine Sn as well as the dual buffering matrices can efficiently maintain the integrity of electrode upon cycling, guaranteeing the superior electrochemical performance. Benefitting from the structural advantages inhe-rited from the ultrafine Sn nanoparticles and dual protection scaffolds, the as-obtained g-C3N4/Sn/NC displays excellent sodium storage performances, with high reversible capacity(450.7 mA•h/g at 0.5 A/g after 100 cycles), remarkable rate capability(388.3 mA•h/g at 1.0 A/g) and stable long-term cycling stability(363.3 mA•h/g after 400 cycles at 1.0 A/g).

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http://hdl.handle.net/10453/154506