Engineering contact curved interface with high-electronic-state active sites for high-performance potassium-ion batteries.

Li, X; Wang, Y; Wu, J; Tong, L; Wang, S; Li, X; Li, C; Wang, M; Li, M; Fan, W; Chen, X; Chen, Q; Wang, G; Chen, Y

Engineering contact curved interface with high-electronic-state active sites for high-performance potassium-ion batteries.

Li, X Wang, Y Wu, J Tong, L Wang, S Li, X Li, C Wang, M Li, M Fan, W Chen, X Chen, Q Wang, G

Chen, Y

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Publisher:: Proceedings of the National Academy of Sciences
Publication Type:: Journal Article
Citation:: Proc Natl Acad Sci U S A, 2023, 120, (52), pp. e2307477120
Issue Date:: 2023-12-26

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Field	Value	Language
dc.contributor.author	Li, X
dc.contributor.author	Wang, Y
dc.contributor.author	Wu, J
dc.contributor.author	Tong, L
dc.contributor.author	Wang, S
dc.contributor.author	Li, X
dc.contributor.author	Li, C
dc.contributor.author	Wang, M
dc.contributor.author	Li, M
dc.contributor.author	Fan, W
dc.contributor.author	Chen, X
dc.contributor.author	Chen, Q
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.contributor.author	Chen, Y
dc.date.accessioned	2024-04-25T03:08:53Z
dc.date.available	2024-04-25T03:08:53Z
dc.date.issued	2023-12-26
dc.identifier.citation	Proc Natl Acad Sci U S A, 2023, 120, (52), pp. e2307477120
dc.identifier.issn	0027-8424
dc.identifier.issn	1091-6490
dc.identifier.uri	http://hdl.handle.net/10453/178363
dc.description.abstract	Potassium-ion batteries (PIBs) have attracted ever-increasing interest due to the abundant potassium resources and low cost, which are considered a sustainable energy storage technology. However, the graphite anodes employed in PIBs suffer from low capacity and sluggish reaction kinetics caused by the large radius of potassium ions. Herein, we report nitrogen-doped, defect-rich hollow carbon nanospheres with contact curved interfaces (CCIs) on carbon nanotubes (CNTs), namely CCI-CNS/CNT, to boost both electron transfer and potassium-ion adsorption. Density functional theory calculations validate that engineering CCIs significantly augments the electronic state near the Fermi level, thus promoting electron transfer. In addition, the CCIs exhibit a pronounced affinity for potassium ions, promoting their adsorption and subsequently benefiting potassium storage. As a result, the rationally designed CCI-CNS/CNT anode shows remarkable cyclic stability and rate capability. This work provides a strategy for enhancing the potassium storage performance of carbonaceous materials through CCI engineering, which can be further extended to other battery systems.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Proceedings of the National Academy of Sciences
dc.relation.ispartof	Proc Natl Acad Sci U S A
dc.relation.isbasedon	10.1073/pnas.2307477120
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Engineering contact curved interface with high-electronic-state active sites for high-performance potassium-ion batteries.
dc.type	Journal Article
utslib.citation.volume	120
utslib.location.activity	United States
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	2024-04-25T03:08:49Z
pubs.issue	52
pubs.publication-status	Published
pubs.volume	120
utslib.citation.issue	52

Abstract:

Potassium-ion batteries (PIBs) have attracted ever-increasing interest due to the abundant potassium resources and low cost, which are considered a sustainable energy storage technology. However, the graphite anodes employed in PIBs suffer from low capacity and sluggish reaction kinetics caused by the large radius of potassium ions. Herein, we report nitrogen-doped, defect-rich hollow carbon nanospheres with contact curved interfaces (CCIs) on carbon nanotubes (CNTs), namely CCI-CNS/CNT, to boost both electron transfer and potassium-ion adsorption. Density functional theory calculations validate that engineering CCIs significantly augments the electronic state near the Fermi level, thus promoting electron transfer. In addition, the CCIs exhibit a pronounced affinity for potassium ions, promoting their adsorption and subsequently benefiting potassium storage. As a result, the rationally designed CCI-CNS/CNT anode shows remarkable cyclic stability and rate capability. This work provides a strategy for enhancing the potassium storage performance of carbonaceous materials through CCI engineering, which can be further extended to other battery systems.

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http://hdl.handle.net/10453/178363