Dendrite-Free Sodium Metal Batteries Enabled by the Release of Contact Strain on Flexible and Sodiophilic Matrix.

Yan, K; Zhao, S; Zhang, J; Safaei, J; Yu, X; Wang, T; Wang, S; Sun, B; Wang, G

Dendrite-Free Sodium Metal Batteries Enabled by the Release of Contact Strain on Flexible and Sodiophilic Matrix.

Yan, K

Zhao, S Zhang, J

Safaei, J Yu, X Wang, T Wang, S Sun, B

Wang, G

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: Nano letters, 2020, 20, (8), pp. 6112-6119
Issue Date:: 2020-08

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Field	Value	Language
dc.contributor.author	Yan, K https://orcid.org/0000-0002-3623-658X
dc.contributor.author	Zhao, S
dc.contributor.author	Zhang, J https://orcid.org/0000-0001-5476-0134
dc.contributor.author	Safaei, J
dc.contributor.author	Yu, X
dc.contributor.author	Wang, T
dc.contributor.author	Wang, S
dc.contributor.author	Sun, B https://orcid.org/0000-0002-4365-486X
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.date.accessioned	2020-11-17T02:51:23Z
dc.date.available	2020-11-17T02:51:23Z
dc.date.issued	2020-08
dc.identifier.citation	Nano letters, 2020, 20, (8), pp. 6112-6119
dc.identifier.issn	1530-6992
dc.identifier.issn	1530-6992
dc.identifier.uri	http://hdl.handle.net/10453/144084
dc.description.abstract	The formation of sodium (Na) dendrites during cycling has impeded the practical application of Na metal anodes. Herein, we developed a flexible graphene-based matrix, e.g., a porous reduced graphene oxide (PRGO) film, to support dendrite-free Na nucleation and plating, contributing to high-performance Na metal batteries. The PRGO film possessed outstanding merits of sodiophilicity and flexibility. The sodiophilic PRGO film enabled uniform Na nucleation in the initial electroplating stage. Furthermore, the flexible PRGO film with a small Young's modulus effectively alleviated the texture deformation of electrodeposited Na, leading to a compact and dendrite-free Na deposition layer. The well-maintained Na metal anodes on the PRGO film exhibited superior cyclability, high Coulombic efficiency, and improved energy density in both half-cell and full-cell testing. This work illustrates the great significance of mechanical properties of the supporting matrix for the Na electroplating, which provides a new strategy to develop high-performance dendrite-free Na metal batteries.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER CHEMICAL SOC
dc.relation	http://purl.org/au-research/grants/arc/DP170100436
dc.relation	http://purl.org/au-research/grants/arc/DP180102297
dc.relation	http://purl.org/au-research/grants/arc/DE180100036
dc.relation	http://purl.org/au-research/grants/arc/DP200101249
dc.relation.ispartof	Nano letters
dc.relation.isbasedon	10.1021/acs.nanolett.0c02215
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Dendrite-Free Sodium Metal Batteries Enabled by the Release of Contact Strain on Flexible and Sodiophilic Matrix.
dc.type	Journal Article
utslib.citation.volume	20
utslib.location.activity	United States
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-11-17T02:51:12Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	20
utslib.citation.issue	8

Abstract:

The formation of sodium (Na) dendrites during cycling has impeded the practical application of Na metal anodes. Herein, we developed a flexible graphene-based matrix, e.g., a porous reduced graphene oxide (PRGO) film, to support dendrite-free Na nucleation and plating, contributing to high-performance Na metal batteries. The PRGO film possessed outstanding merits of sodiophilicity and flexibility. The sodiophilic PRGO film enabled uniform Na nucleation in the initial electroplating stage. Furthermore, the flexible PRGO film with a small Young's modulus effectively alleviated the texture deformation of electrodeposited Na, leading to a compact and dendrite-free Na deposition layer. The well-maintained Na metal anodes on the PRGO film exhibited superior cyclability, high Coulombic efficiency, and improved energy density in both half-cell and full-cell testing. This work illustrates the great significance of mechanical properties of the supporting matrix for the Na electroplating, which provides a new strategy to develop high-performance dendrite-free Na metal batteries.

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http://hdl.handle.net/10453/144084