Strong affinity of polysulfide intermediates to multi-functional binder for practical application in lithium-sulfur batteries

Wang, H; Sencadas, V; Gao, G; Gao, H; Du, A; Liu, H; Guo, Z

Strong affinity of polysulfide intermediates to multi-functional binder for practical application in lithium-sulfur batteries

Wang, H Sencadas, V Gao, G Gao, H

Du, A Liu, H Guo, Z

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Publisher:: ELSEVIER SCIENCE BV
Publication Type:: Journal Article
Citation:: Nano Energy, 2016, 26, pp. 722-728
Issue Date:: 2016-08-01

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Field	Value	Language
dc.contributor.author	Wang, H
dc.contributor.author	Sencadas, V
dc.contributor.author	Gao, G
dc.contributor.author	Gao, H https://orcid.org/0000-0002-4431-631X
dc.contributor.author	Du, A
dc.contributor.author	Liu, H
dc.contributor.author	Guo, Z
dc.date.accessioned	2022-08-11T00:04:36Z
dc.date.available	2022-08-11T00:04:36Z
dc.date.issued	2016-08-01
dc.identifier.citation	Nano Energy, 2016, 26, pp. 722-728
dc.identifier.issn	2211-2855
dc.identifier.issn	2211-3282
dc.identifier.uri	http://hdl.handle.net/10453/159876
dc.description.abstract	Binder, one of the most important battery components, plays a critical role in lithium-sulfur batteries. Poly(vinylidene difluoride) (PVDF), a commonly used binder in lithium-sulfur batteries, does not have a strong affinity to the intermediate polysulfides, however, leading to fast capacity fading with electrochemical cycling. Herein, copolymers of vinylidene difluoride with other monomers are used as multi-functional binders to enhance the electrochemical performance of lithium-sulfur batteries. Compared to the PVDF, the copolymer, poly(vinylidene difluoride-trifluoroethylene) (P(VDF-TRFE)) binder exhibits higher adhesion strength, less porosity, and stronger chemical interaction with polysulfides, which helps to keep the polysulfides within the cathode region, thereby improving the electrochemical performance of the lithium-sulfur battery. As a result, sulfur electrode with P(VDF-TRFE) binder delivered a high capacity of 801 mA h g-1 at 0.2 C after 100 cycles, which is nearly 80% higher capacity than the corresponding sulfur cathode with PVDF binder.
dc.language	English
dc.publisher	ELSEVIER SCIENCE BV
dc.relation	http://purl.org/au-research/grants/arc/LE0882613
dc.relation.ispartof	Nano Energy
dc.relation.isbasedon	10.1016/j.nanoen.2016.06.036
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0303 Macromolecular and Materials Chemistry, 0912 Materials Engineering, 1007 Nanotechnology
dc.title	Strong affinity of polysulfide intermediates to multi-functional binder for practical application in lithium-sulfur batteries
dc.type	Journal Article
utslib.citation.volume	26
utslib.for	0303 Macromolecular and Materials Chemistry
utslib.for	0912 Materials Engineering
utslib.for	1007 Nanotechnology
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	*
dc.date.updated	2022-08-11T00:04:34Z
pubs.publication-status	Published
pubs.volume	26

Abstract:

Binder, one of the most important battery components, plays a critical role in lithium-sulfur batteries. Poly(vinylidene difluoride) (PVDF), a commonly used binder in lithium-sulfur batteries, does not have a strong affinity to the intermediate polysulfides, however, leading to fast capacity fading with electrochemical cycling. Herein, copolymers of vinylidene difluoride with other monomers are used as multi-functional binders to enhance the electrochemical performance of lithium-sulfur batteries. Compared to the PVDF, the copolymer, poly(vinylidene difluoride-trifluoroethylene) (P(VDF-TRFE)) binder exhibits higher adhesion strength, less porosity, and stronger chemical interaction with polysulfides, which helps to keep the polysulfides within the cathode region, thereby improving the electrochemical performance of the lithium-sulfur battery. As a result, sulfur electrode with P(VDF-TRFE) binder delivered a high capacity of 801 mA h g-1 at 0.2 C after 100 cycles, which is nearly 80% higher capacity than the corresponding sulfur cathode with PVDF binder.

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http://hdl.handle.net/10453/159876