High-power lithium-selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode.

Tian, H; Tian, H; Wang, S; Chen, S; Zhang, F; Song, L; Liu, H; Liu, J; Wang, G

High-power lithium-selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode.

Tian, H

Wang, S Chen, S Zhang, F Song, L Liu, H

Liu, J Wang, G

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Publisher:: NATURE RESEARCH
Publication Type:: Journal Article
Citation:: Nature communications, 2020, 11, (1)
Issue Date:: 2020-10-06

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Field	Value	Language
dc.contributor.author	Tian, H https://orcid.org/0000-0002-3622-129X
dc.contributor.author	Tian, H https://orcid.org/0000-0002-3622-129X
dc.contributor.author	Wang, S
dc.contributor.author	Chen, S
dc.contributor.author	Zhang, F
dc.contributor.author	Song, L
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472
dc.contributor.author	Liu, J
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.date.accessioned	2020-12-15T04:10:25Z
dc.date.available	2020-09-14
dc.date.available	2020-12-15T04:10:25Z
dc.date.issued	2020-10-06
dc.identifier.citation	Nature communications, 2020, 11, (1)
dc.identifier.issn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.uri	http://hdl.handle.net/10453/144710
dc.description.abstract	Selenium cathodes have attracted considerable attention due to high electronic conductivity and volumetric capacity comparable to sulphur cathodes. However, practical development of lithium-selenium batteries has been hindered by the low selenium reaction activity with lithium, high volume changes and rapid capacity fading caused by the shuttle effect of polyselenides. Recently, single atom catalysts have attracted extensive interests in electrochemical energy conversion and storage because of unique electronic and structural properties, maximum atom-utilization efficiency, and outstanding catalytic performances. In this work, we developed a facile route to synthesize cobalt single atoms/nitrogen-doped hollow porous carbon (CoSA-HC). The cobalt single atoms can activate selenium reactivity and immobilize selenium and polyselenides. The as-prepared selenium-carbon (Se@CoSA-HC) cathodes deliver a high discharge capacity, a superior rate capability, and excellent cycling stability with a Coulombic efficiency of ~100%. This work could open an avenue for achieving long cycle life and high-power lithium-selenium batteries.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE RESEARCH
dc.relation	http://purl.org/au-research/grants/arc/DP180102297
dc.relation	http://purl.org/au-research/grants/arc/FT180100705
dc.relation.ispartof	Nature communications
dc.relation.isbasedon	10.1038/s41467-020-18820-y
dc.rights	info:eu-repo/semantics/openAccess
dc.title	High-power lithium-selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode.
dc.type	Journal Article
utslib.citation.volume	11
utslib.location.activity	England
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	open_access	*
pubs.consider-herdc	false
dc.date.updated	2020-12-15T04:10:13Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	1

Abstract:

Selenium cathodes have attracted considerable attention due to high electronic conductivity and volumetric capacity comparable to sulphur cathodes. However, practical development of lithium-selenium batteries has been hindered by the low selenium reaction activity with lithium, high volume changes and rapid capacity fading caused by the shuttle effect of polyselenides. Recently, single atom catalysts have attracted extensive interests in electrochemical energy conversion and storage because of unique electronic and structural properties, maximum atom-utilization efficiency, and outstanding catalytic performances. In this work, we developed a facile route to synthesize cobalt single atoms/nitrogen-doped hollow porous carbon (CoSA-HC). The cobalt single atoms can activate selenium reactivity and immobilize selenium and polyselenides. The as-prepared selenium-carbon (Se@CoSA-HC) cathodes deliver a high discharge capacity, a superior rate capability, and excellent cycling stability with a Coulombic efficiency of ~100%. This work could open an avenue for achieving long cycle life and high-power lithium-selenium batteries.

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http://hdl.handle.net/10453/144710