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Decoding Polymer Architecture Effect on Ion Clustering, Chain Dynamics, and Ionic Conductivity in Polymer Electrolytes

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dc.contributor.authorYAHŞİ, UĞUR
dc.contributor.authorTAV, CUMALİ
dc.contributor.authorsBakar R., Darvishi S., Aydemir U., YAHŞİ U., TAV C., Menceloglu Y. Z., Senses E.
dc.date.accessioned2023-04-19T12:24:12Z
dc.date.available2023-04-19T12:24:12Z
dc.date.issued2023-01-01
dc.description.abstractPoly(ethylene oxide) (PEO)-based polymer electrolytes are a promising class of materials for use in lithium-ion batteries due to their high ionic conductivity and flexibility. In this study, the effects of polymer architecture including linear, star, and hyperbranched and salt (lithiumbis(trifluoromethanesulfonyl)imide (LiTFSI)) concentration on the glass transition (Tg), microstructure, phase diagram, free volume, and bulk viscosity, all of which play a significant role in determining the ionic conductivity of the electrolyte, have been systematically studied for PEO-based polymer electrolytes. The branching of PEO widens the liquid phase toward lower salt concentrations, suggesting decreased crystallization and improved ion coordination. At high salt loadings, ion clustering is common for all electrolytes, yet the cluster size and distribution appear to be strongly architecture-dependent. Also, the ionic conductivity is maximized at a salt concentration of [Li/EO ≈ 0.085] for all architectures, and the highly branched polymers displayed as much as three times higher ionic conductivity (with respect to the linear analogue) for the same total molar mass. The architecture-dependent ionic conductivity is attributed to the enhanced free volume measured by positron annihilation lifetime spectroscopy. Interestingly, despite the strong architecture dependence of ionic conductivity, the salt addition in the highly branched architectures results in accelerated yet similar monomeric friction coefficients for these polymers, offering significant potential toward decoupling of conductivity from segmental dynamics of polymer electrolytes, leading to outstanding battery performance.
dc.identifier.citationBakar R., Darvishi S., Aydemir U., YAHŞİ U., TAV C., Menceloglu Y. Z., Senses E., "Decoding Polymer Architecture Effect on Ion Clustering, Chain Dynamics, and Ionic Conductivity in Polymer Electrolytes", ACS Applied Energy Materials, 2023
dc.identifier.doi10.1021/acsaem.3c00310
dc.identifier.issn2574-0962
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85151140942&origin=inward
dc.identifier.urihttps://hdl.handle.net/11424/288794
dc.language.isoeng
dc.relation.ispartofACS Applied Energy Materials
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectTarımsal Bilimler
dc.subjectZiraat
dc.subjectTarım Makineleri
dc.subjectTarımda Enerji
dc.subjectBiyoyakıt Teknolojisi
dc.subjectBilgi Sistemleri, Haberleşme ve Kontrol Mühendisliği
dc.subjectSinyal İşleme
dc.subjectKimya Mühendisliği ve Teknolojisi
dc.subjectKimya
dc.subjectFizikokimya
dc.subjectElektrokimya
dc.subjectTemel Bilimler
dc.subjectMühendislik ve Teknoloji
dc.subjectAgricultural Sciences
dc.subjectAgriculture
dc.subjectFarm Machinery
dc.subjectEnergy in Agriculture
dc.subjectBiofuels Technology
dc.subjectInformation Systems, Communication and Control Engineering
dc.subjectSignal Processing
dc.subjectChemical Engineering and Technology
dc.subjectChemistry
dc.subjectPhysical Chemistry
dc.subjectElectrochemistry
dc.subjectNatural Sciences
dc.subjectEngineering and Technology
dc.subjectMühendislik, Bilişim ve Teknoloji (ENG)
dc.subjectTemel Bilimler (SCI)
dc.subjectMühendislik
dc.subjectMalzeme Bilimi
dc.subjectMÜHENDİSLİK, ELEKTRİK VE ELEKTRONİK
dc.subjectMÜHENDİSLİK, KİMYASAL
dc.subjectENERJİ VE YAKITLAR
dc.subjectELEKTROKİMYA
dc.subjectMALZEME BİLİMİ, ÇOKDİSİPLİNLİ
dc.subjectEngineering, Computing & Technology (ENG)
dc.subjectNatural Sciences (SCI)
dc.subjectENGINEERING
dc.subjectMATERIALS SCIENCE
dc.subjectCHEMISTRY
dc.subjectENGINEERING, ELECTRICAL & ELECTRONIC
dc.subjectENGINEERING, CHEMICAL
dc.subjectENERGY & FUELS
dc.subjectELECTROCHEMISTRY
dc.subjectMATERIALS SCIENCE, MULTIDISCIPLINARY
dc.subjectKimya Mühendisliği (çeşitli)
dc.subjectFizik Bilimleri
dc.subjectEnerji Mühendisliği ve Güç Teknolojisi
dc.subjectMalzeme Kimyası
dc.subjectElektrik ve Elektronik Mühendisliği
dc.subjectChemical Engineering (miscellaneous)
dc.subjectPhysical Sciences
dc.subjectEnergy Engineering and Power Technology
dc.subjectMaterials Chemistry
dc.subjectElectrical and Electronic Engineering
dc.subjectfree volume
dc.subjecthomopolymer electrolytes
dc.subjection pairing and clustering
dc.subjectionic conductivity
dc.subjectphase diagram
dc.subjectpoly(ethylene oxide)
dc.subjectpolymer architecture
dc.subjectviscosity
dc.titleDecoding Polymer Architecture Effect on Ion Clustering, Chain Dynamics, and Ionic Conductivity in Polymer Electrolytes
dc.typearticle
dspace.entity.typePublication
local.avesis.idaa8a084e-080e-49c1-b259-fbe9c21e5d9c
local.indexed.atSCOPUS
relation.isAuthorOfPublication527829aa-1a6f-4555-ad1d-d08b50ead705
relation.isAuthorOfPublicationb4f2fcd0-ebd4-41c4-9a54-32df526acbd5
relation.isAuthorOfPublication.latestForDiscovery527829aa-1a6f-4555-ad1d-d08b50ead705

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