A long-life lithium-oxygen battery via a molecular quenching/mediating mechanism.

Zhang, J; Zhao, Y; Sun, B; Xie, Y; Tkacheva, A; Qiu, F; He, P; Zhou, H; Yan, K; Guo, X; Wang, S; McDonagh, AM; Peng, Z; Lu, J; Wang, G

A long-life lithium-oxygen battery via a molecular quenching/mediating mechanism.

Zhang, J

Zhao, Y Sun, B

Xie, Y Tkacheva, A Qiu, F He, P Zhou, H Yan, K

Guo, X

Wang, S McDonagh, AM Peng, Z Lu, J Wang, G

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Publisher:: AMER ASSOC ADVANCEMENT SCIENCE
Publication Type:: Journal Article
Citation:: Sci Adv, 2022, 8, (3), pp. eabm1899
Issue Date:: 2022-01-21

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Field	Value	Language
dc.contributor.author	Zhang, J https://orcid.org/0000-0001-5476-0134
dc.contributor.author	Zhao, Y
dc.contributor.author	Sun, B https://orcid.org/0000-0002-4365-486X
dc.contributor.author	Xie, Y
dc.contributor.author	Tkacheva, A
dc.contributor.author	Qiu, F
dc.contributor.author	He, P
dc.contributor.author	Zhou, H
dc.contributor.author	Yan, K https://orcid.org/0000-0002-3623-658X
dc.contributor.author	Guo, X https://orcid.org/0000-0001-7771-0463
dc.contributor.author	Wang, S
dc.contributor.author	McDonagh, AM
dc.contributor.author	Peng, Z
dc.contributor.author	Lu, J
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.date.accessioned	2023-02-06T00:42:04Z
dc.date.available	2023-02-06T00:42:04Z
dc.date.issued	2022-01-21
dc.identifier.citation	Sci Adv, 2022, 8, (3), pp. eabm1899
dc.identifier.issn	2375-2548
dc.identifier.issn	2375-2548
dc.identifier.uri	http://hdl.handle.net/10453/165919
dc.description.abstract	The advancement of lithium-oxygen (Li-O2) batteries has been hindered by challenges including low discharge capacity, poor energy efficiency, severe parasitic reactions, etc. We report an Li-O2 battery operated via a new quenching/mediating mechanism that relies on the direct chemical reactions between a versatile molecule and superoxide radical/Li2O2. The battery exhibits a 46-fold increase in discharge capacity, a low charge overpotential of 0.7 V, and an ultralong cycle life >1400 cycles. Featuring redox-active 2,2,6,6-tetramethyl-1-piperidinyloxy moieties bridged by a quenching-active perylene diimide backbone, the tailor-designed molecule acts as a redox mediator to catalyze discharge/charge reactions and serves as a reusable superoxide quencher to chemically react with superoxide species generated during battery operation. The all-in-one molecule can simultaneously tackle issues of parasitic reactions associated with superoxide radicals, singlet oxygen, high overpotentials, and lithium corrosion. The molecular design of multifunctional additives combining various capabilities opens a new avenue for developing high-performance Li-O2 batteries.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER ASSOC ADVANCEMENT SCIENCE
dc.relation	http://purl.org/au-research/grants/arc/DP160104340
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	Sci Adv
dc.relation.isbasedon	10.1126/sciadv.abm1899
dc.rights	info:eu-repo/semantics/openAccess
dc.title	A long-life lithium-oxygen battery via a molecular quenching/mediating mechanism.
dc.type	Journal Article
utslib.citation.volume	8
utslib.location.activity	United States
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	open_access	*
dc.date.updated	2023-02-06T00:42:02Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	8
utslib.citation.issue	3

Abstract:

The advancement of lithium-oxygen (Li-O2) batteries has been hindered by challenges including low discharge capacity, poor energy efficiency, severe parasitic reactions, etc. We report an Li-O2 battery operated via a new quenching/mediating mechanism that relies on the direct chemical reactions between a versatile molecule and superoxide radical/Li2O2. The battery exhibits a 46-fold increase in discharge capacity, a low charge overpotential of 0.7 V, and an ultralong cycle life >1400 cycles. Featuring redox-active 2,2,6,6-tetramethyl-1-piperidinyloxy moieties bridged by a quenching-active perylene diimide backbone, the tailor-designed molecule acts as a redox mediator to catalyze discharge/charge reactions and serves as a reusable superoxide quencher to chemically react with superoxide species generated during battery operation. The all-in-one molecule can simultaneously tackle issues of parasitic reactions associated with superoxide radicals, singlet oxygen, high overpotentials, and lithium corrosion. The molecular design of multifunctional additives combining various capabilities opens a new avenue for developing high-performance Li-O2 batteries.

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http://hdl.handle.net/10453/165919