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Article: Exploring the performance of carbonate and ether-based electrolytes for anode-free lithium metal batteries operating under various conditions

TitleExploring the performance of carbonate and ether-based electrolytes for anode-free lithium metal batteries operating under various conditions
Authors
KeywordsAnode-free lithium metal battery
Carboxylate ester solvents
Ionic conductivity
Low temperature
Viscosity
Issue Date2021
Citation
Journal of Power Sources, 2021, v. 512, article no. 230388 How to Cite?
AbstractAn anode-free lithium metal battery (AFLMB) configuration can be used to develop electrolytes for wide-temperature applications. The charge/discharge performance of an electrolyte consisting of lithium hexafluorophosphate (LiPF6) in a mixture of fluoroethylene carbonate (FEC), 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE), and ethyl methyl carbonate (EMC) has been is reported as an electrolyte for lithium metal batteries. It has a good passivating capability and wide electrochemical windows relative to the commercial electrolyte. Conversely, its lower ionic conductivity and high viscosity impede practical application. Hence, an electrolyte of 1 M LiPF6 in EA/FEC/TTE/EMC (2:1:5:2 by vol.) is developed by adding a quaternary solvent of ethyl acetate (EA). The electrolyte exhibits a lower viscosity and higher ionic conductivity than 1 M LiPF6 in FEC/TTE/EMC (3:5:2 by vol.). At 0 °C, 1 M LiPF6 in EA/FEC/TTE/EMC (2:1:5:2 by vol.) provides capacity retention of 30 % and the average Coulombic efficiency (av. CE) of 95 % using the Cu||NMC111 after 40 cycles at a current density of 0.2 mA/cm2. The synergy of higher ionic conductivity and formation of LiF layer in the developed electrolyte extends the service-temperature range of AFLMB. This study opens an avenue in developing low-temperature electrolytes using an AFLMB.
Persistent Identifierhttp://hdl.handle.net/10722/334777
ISSN
2023 Impact Factor: 8.1
2023 SCImago Journal Rankings: 1.857
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHagos, Teklay Mezgebe-
dc.contributor.authorBezabh, Hailemariam Kassa-
dc.contributor.authorRedda, Haylay Ghidey-
dc.contributor.authorMoges, Endalkachew Asefa-
dc.contributor.authorHuang, Wei Hsiang-
dc.contributor.authorHuang, Chen Jui-
dc.contributor.authorSu, Wei Nien-
dc.contributor.authorDai, Hongjie-
dc.contributor.authorHwang, Bing Joe-
dc.date.accessioned2023-10-20T06:50:40Z-
dc.date.available2023-10-20T06:50:40Z-
dc.date.issued2021-
dc.identifier.citationJournal of Power Sources, 2021, v. 512, article no. 230388-
dc.identifier.issn0378-7753-
dc.identifier.urihttp://hdl.handle.net/10722/334777-
dc.description.abstractAn anode-free lithium metal battery (AFLMB) configuration can be used to develop electrolytes for wide-temperature applications. The charge/discharge performance of an electrolyte consisting of lithium hexafluorophosphate (LiPF6) in a mixture of fluoroethylene carbonate (FEC), 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE), and ethyl methyl carbonate (EMC) has been is reported as an electrolyte for lithium metal batteries. It has a good passivating capability and wide electrochemical windows relative to the commercial electrolyte. Conversely, its lower ionic conductivity and high viscosity impede practical application. Hence, an electrolyte of 1 M LiPF6 in EA/FEC/TTE/EMC (2:1:5:2 by vol.) is developed by adding a quaternary solvent of ethyl acetate (EA). The electrolyte exhibits a lower viscosity and higher ionic conductivity than 1 M LiPF6 in FEC/TTE/EMC (3:5:2 by vol.). At 0 °C, 1 M LiPF6 in EA/FEC/TTE/EMC (2:1:5:2 by vol.) provides capacity retention of 30 % and the average Coulombic efficiency (av. CE) of 95 % using the Cu||NMC111 after 40 cycles at a current density of 0.2 mA/cm2. The synergy of higher ionic conductivity and formation of LiF layer in the developed electrolyte extends the service-temperature range of AFLMB. This study opens an avenue in developing low-temperature electrolytes using an AFLMB.-
dc.languageeng-
dc.relation.ispartofJournal of Power Sources-
dc.subjectAnode-free lithium metal battery-
dc.subjectCarboxylate ester solvents-
dc.subjectIonic conductivity-
dc.subjectLow temperature-
dc.subjectViscosity-
dc.titleExploring the performance of carbonate and ether-based electrolytes for anode-free lithium metal batteries operating under various conditions-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jpowsour.2021.230388-
dc.identifier.scopuseid_2-s2.0-85114407990-
dc.identifier.volume512-
dc.identifier.spagearticle no. 230388-
dc.identifier.epagearticle no. 230388-
dc.identifier.isiWOS:000700072600006-

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