CoS Quantum Dot Nanoclusters for High-Energy Potassium-Ion Batteries

Gao, H; Zhou, T; Zheng, Y; Zhang, Q; Liu, Y; Chen, J; Liu, H; Guo, Z

CoS Quantum Dot Nanoclusters for High-Energy Potassium-Ion Batteries

Gao, H

Zhou, T Zheng, Y Zhang, Q Liu, Y Chen, J Liu, H Guo, Z

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: Advanced Functional Materials, 2017, 27, (43), pp. 1-9
Issue Date:: 2017-11-17

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Field	Value	Language
dc.contributor.author	Gao, H https://orcid.org/0000-0002-4431-631X
dc.contributor.author	Zhou, T
dc.contributor.author	Zheng, Y
dc.contributor.author	Zhang, Q
dc.contributor.author	Liu, Y
dc.contributor.author	Chen, J
dc.contributor.author	Liu, H
dc.contributor.author	Guo, Z
dc.date.accessioned	2022-09-07T04:37:36Z
dc.date.available	2022-09-07T04:37:36Z
dc.date.issued	2017-11-17
dc.identifier.citation	Advanced Functional Materials, 2017, 27, (43), pp. 1-9
dc.identifier.issn	1616-301X
dc.identifier.issn	1616-3028
dc.identifier.uri	http://hdl.handle.net/10453/161454
dc.description.abstract	Potassium-ion batteries (PIBs) are a promising alternative to lithium-ion batteries because potassium is an abundant natural resource. To date, PIBs are in the early stages of exploration and only a few anode materials have been investigated. This study reports a cobalt sulfide and graphene (CoS@G) composite as anode electrode for PIBs for the first time. The composite features interconnect quantum dots of CoS nanoclusters uniformly anchored on graphene nanosheets. The coexistence of CoS quantum dot nanoclusters and graphene nanosheets endows the composite with large surface area, highly conductive network, robust structural stability, and excellent electrochemical energy storage performance. An unprecedented capacity of 310.8 mA h g−1 at 500 mA g−1 is obtained after 100 cycles, with a rate capability better than an equivalent sodium-ion batteries (SIBs). This work provides the evidence that PIBs can be a promising alternative to SIBs, especially at high charge–discharge rates. The development of the CoS@G anode material also provides the basis of expanding the library of suitable anode materials for PIBs.
dc.language	English
dc.publisher	Wiley
dc.relation.ispartof	Advanced Functional Materials
dc.relation.isbasedon	10.1002/adfm.201702634
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Materials
dc.title	CoS Quantum Dot Nanoclusters for High-Energy Potassium-Ion Batteries
dc.type	Journal Article
utslib.citation.volume	27
utslib.for	02 Physical Sciences
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	2022-09-07T04:37:34Z
pubs.issue	43
pubs.publication-status	Published
pubs.volume	27
utslib.citation.issue	43

Abstract:

Potassium-ion batteries (PIBs) are a promising alternative to lithium-ion batteries because potassium is an abundant natural resource. To date, PIBs are in the early stages of exploration and only a few anode materials have been investigated. This study reports a cobalt sulfide and graphene (CoS@G) composite as anode electrode for PIBs for the first time. The composite features interconnect quantum dots of CoS nanoclusters uniformly anchored on graphene nanosheets. The coexistence of CoS quantum dot nanoclusters and graphene nanosheets endows the composite with large surface area, highly conductive network, robust structural stability, and excellent electrochemical energy storage performance. An unprecedented capacity of 310.8 mA h g−1 at 500 mA g−1 is obtained after 100 cycles, with a rate capability better than an equivalent sodium-ion batteries (SIBs). This work provides the evidence that PIBs can be a promising alternative to SIBs, especially at high charge–discharge rates. The development of the CoS@G anode material also provides the basis of expanding the library of suitable anode materials for PIBs.

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http://hdl.handle.net/10453/161454