TEMPO-Ionic Liquids as Redox Mediators and Solvents for Li-O<inf>2</inf> Batteries

Tkacheva, A; Zhang, J; Sun, B; Zhou, D; Wang, G; McDonagh, AM

TEMPO-Ionic Liquids as Redox Mediators and Solvents for Li-O<inf>2</inf> Batteries

Tkacheva, A Zhang, J

Sun, B

Zhou, D

Wang, G

McDonagh, AM

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: Journal of Physical Chemistry C, 2020, 124, (9), pp. 5087-5092
Issue Date:: 2020-03-05

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Field	Value	Language
dc.contributor.author	Tkacheva, A
dc.contributor.author	Zhang, J https://orcid.org/0000-0001-5476-0134
dc.contributor.author	Sun, B https://orcid.org/0000-0002-4365-486X
dc.contributor.author	Zhou, D https://orcid.org/0000-0002-2578-7124
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.contributor.author	McDonagh, AM
dc.date.accessioned	2020-11-23T05:37:53Z
dc.date.available	2020-11-23T05:37:53Z
dc.date.issued	2020-03-05
dc.identifier.citation	Journal of Physical Chemistry C, 2020, 124, (9), pp. 5087-5092
dc.identifier.issn	1932-7447
dc.identifier.issn	1932-7455
dc.identifier.uri	http://hdl.handle.net/10453/144257
dc.description.abstract	Copyright © 2020 American Chemical Society. Effective Li-O2 batteries require additives to suppress the side reactions and the increase in charge potential at the oxygen cathode, which leads to an inevitable battery failure. In this study, two families of new 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-substituted imidazolium ionic liquids (TEMPOImILs) were synthesized, and their properties were examined to determine the optimal structures that function as both solvents and redox mediators in Li-O2 batteries. Comparison of the characteristics revealed that batteries with TEMPOImILs bearing a hydrogen rather than a methyl substituent in the 2-position of the imidazole moiety had a longer cycle life, whereas the length of the alkyl chain connecting the imidazole ring and 4-hydroxy-TEMPO did not have any substantial effect on the battery performance.
dc.language	English
dc.publisher	AMER CHEMICAL SOC
dc.relation	http://purl.org/au-research/grants/arc/DP160104340
dc.relation.ispartof	Journal of Physical Chemistry C
dc.relation.isbasedon	10.1021/acs.jpcc.0c00367
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	03 Chemical Sciences, 09 Engineering, 10 Technology
dc.subject.classification	Physical Chemistry
dc.title	TEMPO-Ionic Liquids as Redox Mediators and Solvents for Li-O<inf>2</inf> Batteries
dc.type	Journal Article
utslib.citation.volume	124
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
utslib.for	10 Technology
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	2020-11-23T05:37:49Z
pubs.issue	9
pubs.publication-status	Published
pubs.volume	124
utslib.citation.issue	9

Abstract:

Copyright © 2020 American Chemical Society. Effective Li-O2 batteries require additives to suppress the side reactions and the increase in charge potential at the oxygen cathode, which leads to an inevitable battery failure. In this study, two families of new 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-substituted imidazolium ionic liquids (TEMPOImILs) were synthesized, and their properties were examined to determine the optimal structures that function as both solvents and redox mediators in Li-O2 batteries. Comparison of the characteristics revealed that batteries with TEMPOImILs bearing a hydrogen rather than a methyl substituent in the 2-position of the imidazole moiety had a longer cycle life, whereas the length of the alkyl chain connecting the imidazole ring and 4-hydroxy-TEMPO did not have any substantial effect on the battery performance.

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http://hdl.handle.net/10453/144257