Lithiophilic Vertical Cactus-Like Framework Derived from Cu/Zn-Based Coordination Polymer through In Situ Chemical Etching for Stable Lithium Metal Batteries

Liu, T; Chen, S; Sun, W; Lv, LP; Du, FH; Liu, H; Wang, Y

Lithiophilic Vertical Cactus-Like Framework Derived from Cu/Zn-Based Coordination Polymer through In Situ Chemical Etching for Stable Lithium Metal Batteries

Liu, T Chen, S Sun, W Lv, LP Du, FH Liu, H

Wang, Y

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Publisher:: WILEY-V C H VERLAG GMBH
Publication Type:: Journal Article
Citation:: Advanced Functional Materials, 2021, 31, (14)
Issue Date:: 2021-04-01

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Field	Value	Language
dc.contributor.author	Liu, T
dc.contributor.author	Chen, S
dc.contributor.author	Sun, W
dc.contributor.author	Lv, LP
dc.contributor.author	Du, FH
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472
dc.contributor.author	Wang, Y
dc.date.accessioned	2022-02-09T21:18:37Z
dc.date.available	2022-02-09T21:18:37Z
dc.date.issued	2021-04-01
dc.identifier.citation	Advanced Functional Materials, 2021, 31, (14)
dc.identifier.issn	1616-301X
dc.identifier.issn	1616-3028
dc.identifier.uri	http://hdl.handle.net/10453/154357
dc.description.abstract	Detrimental dendritic lithium (Li) growth, infinite volume expansion of Li deposition and inevitable excess electrolyte consumption have always impeded the successful application of Li metal anodes. Herein, a unique lithiophilic vertical cactus-like framework (LVCF) derived from a Zn/Cu-based coordination polymer through in situ chemical etching of Cu foam is proposed to enhance the safety and electrochemical performance of Li metal anodes. An ingenious strategy of releasing Cu ions from Cu foam in the presence of organic ligands is implemented successfully to achieve the coordination polymer precursor, resulting in the coexistence of massive lithiophilic nitrogen-containing functional groups, ZnO quantum dots and in situ grown carbon nanotubes (CNTs) in the LVCF, which is beneficial to avoiding the generation of harmful Li dendrites. Benefiting from the positive effects of the improved lithiophilicity, decreased local current density and relieved volume expansion, LVCF delivers an ultrastable Coulombic efficiency of 98.6% for 600 cycles at 1 mA cm–2 and an improved cycling lifespan of 1800 h for symmetric cells. Full cells comprising LVCF@Li anodes and LiFePO4 cathodes can deliver an ultrahigh capacity of 101.8 mAh g–1 (capacity retention ratio: 77.9%) after 900 cycles at 1 C and excellent rate performance.
dc.language	English
dc.publisher	WILEY-V C H VERLAG GMBH
dc.relation.ispartof	Advanced Functional Materials
dc.relation.isbasedon	10.1002/adfm.202008514
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Materials
dc.title	Lithiophilic Vertical Cactus-Like Framework Derived from Cu/Zn-Based Coordination Polymer through In Situ Chemical Etching for Stable Lithium Metal Batteries
dc.type	Journal Article
utslib.citation.volume	31
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 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	2022-02-09T21:18:35Z
pubs.issue	14
pubs.publication-status	Published
pubs.volume	31
utslib.citation.issue	14

Abstract:

Detrimental dendritic lithium (Li) growth, infinite volume expansion of Li deposition and inevitable excess electrolyte consumption have always impeded the successful application of Li metal anodes. Herein, a unique lithiophilic vertical cactus-like framework (LVCF) derived from a Zn/Cu-based coordination polymer through in situ chemical etching of Cu foam is proposed to enhance the safety and electrochemical performance of Li metal anodes. An ingenious strategy of releasing Cu ions from Cu foam in the presence of organic ligands is implemented successfully to achieve the coordination polymer precursor, resulting in the coexistence of massive lithiophilic nitrogen-containing functional groups, ZnO quantum dots and in situ grown carbon nanotubes (CNTs) in the LVCF, which is beneficial to avoiding the generation of harmful Li dendrites. Benefiting from the positive effects of the improved lithiophilicity, decreased local current density and relieved volume expansion, LVCF delivers an ultrastable Coulombic efficiency of 98.6% for 600 cycles at 1 mA cm–2 and an improved cycling lifespan of 1800 h for symmetric cells. Full cells comprising LVCF@Li anodes and LiFePO4 cathodes can deliver an ultrahigh capacity of 101.8 mAh g–1 (capacity retention ratio: 77.9%) after 900 cycles at 1 C and excellent rate performance.

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http://hdl.handle.net/10453/154357