Examining the role of electrolyte and binders in determining discharge product morphology and cycling performance of carbon cathodes in Li-O2 Batteries

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dc.contributor.authorGeaney, Hugh
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderSeventh Framework Programmeen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2018-05-09T14:26:24Z
dc.date.available2018-05-09T14:26:24Z
dc.date.issued2015-11-04
dc.date.updated2018-05-03T07:41:35Z
dc.description.abstractIn this report we examine the influence of electrode binder and electrolyte solvent on the electrochemical response of carbon based Li-O2 battery cathodes. Much higher discharge capacities were noted for cathodes discharged in DMSO compared to TEGDME. The increased capacities were related to the large spherical discharge products formed in DMSO. Characteristic toroids which have been noted in TEGDME electrolytes previously were not observed due to the low water content of the electrolyte. Linear voltage sweeps were used to investigate ORR in both of the solvents for each of the binder systems (PVDF, PVP, PEO and PTFE) and related to the Li2O2 formed on the cathode surfaces. Galvanostatic tests were also conducted in air as a comparison with the pure O2 environment typically used for Li-O2 battery testing. Interestingly, tests for the two electrolytes showed opposite trends in terms of discharge capacity values with capacities increased in TEGDME (compared to those seen in O2) and decreased in DMSO. The report highlights the key roles of electrolyte and cathode composition in determining the stability of Li-O2 batteries and highlights the importance of identifying more stable electrolyte/cathode pairings.en
dc.description.sponsorshipIrish Research Council (New Foundations Award)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGeaney, H. and O'Dwyer, C. (2016) 'Examining the Role of Electrolyte and Binders in Determining Discharge Product Morphology and Cycling Performance of Carbon Cathodes in Li-O2 Batteries', Journal of The Electrochemical Society, 163(2), pp. A43-A49. doi: 10.1149/2.1011514jesen
dc.identifier.doi10.1149/2.1011514jes
dc.identifier.endpageA49en
dc.identifier.issn0013-4651
dc.identifier.issued2en
dc.identifier.journaltitleJournal of the Electrochemical Societyen
dc.identifier.startpageA43en
dc.identifier.urihttps://hdl.handle.net/10468/6052
dc.identifier.volume163en
dc.language.isoenen
dc.publisherElectrochemical Societyen
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP1::NMP/314508/EU/STable high-capacity lithium-Air Batteries with Long cycle life for Electric cars/STABLEen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/13/TIDA/E2761/IE/LiONSKIN - Moldable Li-ion battery outer skin for electronic devices/en
dc.relation.urihttp://jes.ecsdl.org/content/163/2/A43.full.pdf+html
dc.rights© The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectElectrolytesen
dc.subjectCathode compositionen
dc.subjectCycling performanceen
dc.subjectDischarge capacitiesen
dc.subjectElectrochemical responseen
dc.subjectElectrolyte solventen
dc.subjectGalvanostatic testsen
dc.subjectLow water-contenten
dc.subjectProduct morphologyen
dc.subjectBindersen
dc.subjectElectric dischargesen
dc.subjectElectrodesen
dc.subjectLithiumen
dc.subjectLithium batteriesen
dc.subjectSecondary batteriesen
dc.subjectBinsen
dc.subjectCathodesen
dc.subjectElectric batteriesen
dc.subjectLi-O2 batteryen
dc.subjectLi-air batteryen
dc.subjectEnergy storageen
dc.titleExamining the role of electrolyte and binders in determining discharge product morphology and cycling performance of carbon cathodes in Li-O2 Batteriesen
dc.typeArticle (peer-reviewed)en
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