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Lithium–copper alloy embedded in 3D porous copper foam with enhanced electrochemical performance toward lithium metal batteries

2021-10-01Journal article Restricted access
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dc.contributor.authorLu, Ziyu
dc.contributor.authorTai, Zhixin
dc.contributor.authorYu, Zhipeng
dc.contributor.authorLaGrow, Alec P.
dc.contributor.authorBondarchuk, Oleksandr
dc.contributor.authorSousa, Juliana P.S.
dc.contributor.authorMeng, Lijian
dc.contributor.authorPeng, Zhijian
dc.contributor.authorLiu, Lifeng
dc.date.accessioned2021-11-02T10:57:18Z
dc.date.embargo2035
dc.date.issued2021-10-01
dc.description.abstractSuppressing dendrite growth and accommodating volume change, among others, are the main challenges for lithium (Li) metal anode to be used in rechargeable Li batteries. The commercial macroporous copper (Cu) foam current collector may only tackle these challenges to a little extent, and it is usually unable to provide sufficient Li nucleation sites, leading to rapidly increased polarization and unstable cycling performance. Herein, we report a three-dimensional composite anode comprising Li–Cu alloy melt-cast on a commercial Cu foam (CF) current collector (Li–Cu/CF), which can be converted to a unique architecture consisting of Li metal supported by an interconnected CuLix alloy nanowire network formed because of the phase separation, when the molten Li–Cu alloy cools down and gets solidified. Compared to the bare Li foil, the Li–Cu/CF anode shows a smaller polarization and better cycle stability in the carbonate electrolyte at various current densities ranging from 1 to 5 mA/cm2 and is free from dendrite growth upon repeated Li plating/stripping. This can be attributed to the low Li nucleation overpotential and high Coulombic efficiency (96%) during Li plating on and stripping from the thus-obtained hierarchically structured CF collector, as well as the higher proportion of Li2O relative to LiF in the solid-electrolyte interphase layer. Moreover, when assembled in a full cell paired with the LiFePO4 cathode, the Li–Cu/CF anode also exhibits much better rate capability and cycle performance than the bare Li foil. Our work provides a new convenient approach to construct a dendrite-free Li metal anode that can be potentially deployed in the next-generation high energy density rechargeable Li batteries.pt_PT
dc.description.sponsorshipL. Liu acknowledges the financial support of the National Innovation Agency (ANI) of Portugal through the Baterias 2030 project (Grant No. POCI-01-0247-FEDER-046109). Z. Lu is grateful for the support of the China Scholarship Council (Grant No. 201806400066). This work was carried out in part through the use of the INL Advanced Electron Microscopy, Imaging and Spectroscopy (AEMIS) facilities.
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.mtener.2021.100871pt_PT
dc.identifier.issn2468-6069
dc.identifier.urihttp://hdl.handle.net/10400.22/18805
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPOCI-01-0247-FEDER-046109
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S2468606921002367?via%3Dihubpt_PT
dc.subjectLithium metal batterypt_PT
dc.subjectLi–Cu alloypt_PT
dc.subject3D porous electrodept_PT
dc.subjectSuppression of dendrite growthpt_PT
dc.titleLithium–copper alloy embedded in 3D porous copper foam with enhanced electrochemical performance toward lithium metal batteriespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage100871pt_PT
oaire.citation.titleMaterials Today Energypt_PT
oaire.citation.volume22pt_PT
person.familyNameMeng
person.givenNameLijian
person.identifier236430
person.identifier.ciencia-idC31B-0091-BD12
person.identifier.orcid0000-0001-6071-3502
person.identifier.scopus-author-id7202236050
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationcb02ae05-0786-47ff-b480-2fde7ef93e0d
relation.isAuthorOfPublication.latestForDiscoverycb02ae05-0786-47ff-b480-2fde7ef93e0d

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