Hierarchical O<inf>α</inf>-rich Co<inf>3</inf>O<inf>4</inf> nanoarray anchored on Ni foam with superior lithiophilicity enabling ultrastable lithium metal batteries

Tang, K; Gao, H; Xiao, J; Long, M; Chen, J; Liu, H; Wang, G

Hierarchical O<inf>α</inf>-rich Co<inf>3</inf>O<inf>4</inf> nanoarray anchored on Ni foam with superior lithiophilicity enabling ultrastable lithium metal batteries

Tang, K Gao, H

Xiao, J Long, M Chen, J Liu, H

Wang, G

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Publisher:: ELSEVIER SCIENCE SA
Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2022, 436
Issue Date:: 2022-05-15

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Field	Value	Language
dc.contributor.author	Tang, K
dc.contributor.author	Gao, H https://orcid.org/0000-0002-4431-631X
dc.contributor.author	Xiao, J
dc.contributor.author	Long, M
dc.contributor.author	Chen, J
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.date.accessioned	2023-02-23T04:57:35Z
dc.date.available	2023-02-23T04:57:35Z
dc.date.issued	2022-05-15
dc.identifier.citation	Chemical Engineering Journal, 2022, 436
dc.identifier.issn	1385-8947
dc.identifier.issn	1873-3212
dc.identifier.uri	http://hdl.handle.net/10453/166391
dc.description.abstract	Lithium metal batteries (LMBs) are considered as the ultimate choice in the next-generation high performance energy-storage systems due to their outstanding theoretical energy density (≥500 Wh kg−1). However, the unavoidable dendrite issues and infinite volume change during repeated plating/stripping induce poor electrochemical performance and serious safety issues. Here, we designed and prepared an integrated Oα (O- or O22–)-rich Co3O4 nanoarrays anchored on Ni foam (Oα-Co3O4@NF) scaffold as a stable host for ultra-fast lithium metal infusion. Remarkably, the highly reactive Oα behaves low energy bonding and strong electron affinity, which are further verified by the results of density functional theory, giving rise to high lithiophilicity and inhibiting the dendrites formation effectively. Moreover, the by-product NiO formed on the NF during the calcination process combines with Oα-Co3O4 to display superior dual-wettability toward molten Li. As a result, the Oα-Co3O4@NF electrode achieves a Coulombic efficiency above 99.00% more than 450 cycles at a current density of 1 mA cm−2, and the Oα-Co3O4@NF-Li anode presents a super-long and stable lifetime of 800 h during the repeated plating/striping process. When coupled with a high-loading LiFePO4 cathode, the full cells deliver excellent rate capability and 88.96% capacity retention after 200 cycles under 0.5C.
dc.language	English
dc.publisher	ELSEVIER SCIENCE SA
dc.relation	http://purl.org/au-research/grants/arc/DP180102297
dc.relation	http://purl.org/au-research/grants/arc/FT180100705
dc.relation	Australian Technology Network of Universities
dc.relation.ispartof	Chemical Engineering Journal
dc.relation.isbasedon	10.1016/j.cej.2022.134698
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Chemical Engineering
dc.title	Hierarchical O<inf>α</inf>-rich Co<inf>3</inf>O<inf>4</inf> nanoarray anchored on Ni foam with superior lithiophilicity enabling ultrastable lithium metal batteries
dc.type	Journal Article
utslib.citation.volume	436
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental 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	*
dc.date.updated	2023-02-23T04:57:28Z
pubs.publication-status	Published
pubs.volume	436

Abstract:

Lithium metal batteries (LMBs) are considered as the ultimate choice in the next-generation high performance energy-storage systems due to their outstanding theoretical energy density (≥500 Wh kg−1). However, the unavoidable dendrite issues and infinite volume change during repeated plating/stripping induce poor electrochemical performance and serious safety issues. Here, we designed and prepared an integrated Oα (O- or O22–)-rich Co3O4 nanoarrays anchored on Ni foam (Oα-Co3O4@NF) scaffold as a stable host for ultra-fast lithium metal infusion. Remarkably, the highly reactive Oα behaves low energy bonding and strong electron affinity, which are further verified by the results of density functional theory, giving rise to high lithiophilicity and inhibiting the dendrites formation effectively. Moreover, the by-product NiO formed on the NF during the calcination process combines with Oα-Co3O4 to display superior dual-wettability toward molten Li. As a result, the Oα-Co3O4@NF electrode achieves a Coulombic efficiency above 99.00% more than 450 cycles at a current density of 1 mA cm−2, and the Oα-Co3O4@NF-Li anode presents a super-long and stable lifetime of 800 h during the repeated plating/striping process. When coupled with a high-loading LiFePO4 cathode, the full cells deliver excellent rate capability and 88.96% capacity retention after 200 cycles under 0.5C.

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http://hdl.handle.net/10453/166391