Ultrathin Cobaltosic Oxide Nanosheets as an Effective Sulfur Encapsulation Matrix with Strong Affinity Toward Polysulfides.

Wang, H; Zhou, T; Li, D; Gao, H; Gao, G; Du, A; Liu, H; Guo, Z

Ultrathin Cobaltosic Oxide Nanosheets as an Effective Sulfur Encapsulation Matrix with Strong Affinity Toward Polysulfides.

Wang, H Zhou, T Li, D Gao, H

Gao, G Du, A Liu, H Guo, Z

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Publisher:: American Chemical Society
Publication Type:: Journal Article
Citation:: ACS Applied Materials and Interfaces, 2017, 9, (5), pp. 4320-4325
Issue Date:: 2017-02-08

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Field	Value	Language
dc.contributor.author	Wang, H
dc.contributor.author	Zhou, T
dc.contributor.author	Li, D
dc.contributor.author	Gao, H https://orcid.org/0000-0002-4431-631X
dc.contributor.author	Gao, G
dc.contributor.author	Du, A
dc.contributor.author	Liu, H
dc.contributor.author	Guo, Z
dc.date.accessioned	2022-09-07T04:41:23Z
dc.date.available	2022-09-07T04:41:23Z
dc.date.issued	2017-02-08
dc.identifier.citation	ACS Applied Materials and Interfaces, 2017, 9, (5), pp. 4320-4325
dc.identifier.issn	1944-8244
dc.identifier.issn	1944-8252
dc.identifier.uri	http://hdl.handle.net/10453/161455
dc.description.abstract	Two-dimensional ultrathin cobaltosic oxide nanosheets with numerous geometrical holes were synthesized by the hydrothermal method, and further used as an effective encapsulation matrix for sulfur and polysulfides in lithium-sulfur batteries. The cobaltosic oxide/sulfur nanosheet composite electrode exhibits high Coulombic efficiency (99%), a suppressed shuttle effect, and a reversible capacity of 656 mA h g-1 at 0.2 C after 200 cycles, with small capacity fading of 0.219% per cycle, whereas its carbon-sulfur electrode counterpart only retains a capacity of 386 mA h g-1 after 100 cycles. The improved performance is attributed to the strong chemical interaction between polysulfides and cobaltosic oxide, and its facile ionic transport and enhanced reaction kinetics, which can effectively control the diffusion of polysulfides and keep them within the cathode region, leading to good electrochemical stability.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	American Chemical Society
dc.relation.ispartof	ACS Applied Materials and Interfaces
dc.relation.isbasedon	10.1021/acsami.6b07961
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Nanoscience & Nanotechnology
dc.title	Ultrathin Cobaltosic Oxide Nanosheets as an Effective Sulfur Encapsulation Matrix with Strong Affinity Toward Polysulfides.
dc.type	Journal Article
utslib.citation.volume	9
utslib.location.activity	United States
utslib.for	03 Chemical Sciences
utslib.for	09 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
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-09-07T04:41:22Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	9
utslib.citation.issue	5

Abstract:

Two-dimensional ultrathin cobaltosic oxide nanosheets with numerous geometrical holes were synthesized by the hydrothermal method, and further used as an effective encapsulation matrix for sulfur and polysulfides in lithium-sulfur batteries. The cobaltosic oxide/sulfur nanosheet composite electrode exhibits high Coulombic efficiency (99%), a suppressed shuttle effect, and a reversible capacity of 656 mA h g-1 at 0.2 C after 200 cycles, with small capacity fading of 0.219% per cycle, whereas its carbon-sulfur electrode counterpart only retains a capacity of 386 mA h g-1 after 100 cycles. The improved performance is attributed to the strong chemical interaction between polysulfides and cobaltosic oxide, and its facile ionic transport and enhanced reaction kinetics, which can effectively control the diffusion of polysulfides and keep them within the cathode region, leading to good electrochemical stability.

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http://hdl.handle.net/10453/161455