On the use of gas diffusion layers as current collectors in Li-O2 batteries

Simple item page
dc.contributor.authorGeaney, Hugh
dc.contributor.authorO'Connell, John
dc.contributor.authorHolmes, Justin D.
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderSeventh Framework Programmeen
dc.date.accessioned2018-05-11T14:17:05Z
dc.date.available2018-05-11T14:17:05Z
dc.date.issued2014-09-03
dc.date.updated2018-05-03T10:39:24Z
dc.description.abstractWe investigate the impact of using a carbon based gas diffusion layer (GDL) as the current collector for Li-O2 batteries. It is shown that the GDL actively participates in ORR during discharge conditions and, if its mass is not accounted for, can lead to inflated discharge capacity figures compared to inert cathode supports. SEM and XRD analyses show that Li2O2 discharge products form on cathodes composed of as-received GDL in a similar manner to that observed for carbon on stainless steel (SS) current collectors (at applied currents of 100 μA cm−2 or less). The relative activity of the GDL, carbon on GDL and carbon-on-stainless steel current collectors from voltammetric measurements confirmed ORR and OER processes to be similar at all carbon-based surfaces. When heated above 300°C, degradation of the binder in the GDL and associated loss of carbon from the substrate surface leads to reduced discharge times compared to the pristine GDL substrates. The data highlight the importance of the contribution to ORR/OER in carbon-based active current collector substrates when determining gravimetric capacities of Li-O2 batteries.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGeaney, H., O'Connell, J., Holmes, J. D. and O'Dwyer, C. (2014) 'On the Use of Gas Diffusion Layers as Current Collectors in Li-O2 Battery Cathodes', Journal of The Electrochemical Society, 161(14), pp. A1964-A1968. doi:10.1149/2.0021414jesen
dc.identifier.doi10.1149/2.0021414jes
dc.identifier.endpageA1968en
dc.identifier.issn0013-4651
dc.identifier.issued14en
dc.identifier.journaltitleJournal of the Electrochemical Societyen
dc.identifier.startpageA1964en
dc.identifier.urihttps://hdl.handle.net/10468/6089
dc.identifier.volume161en
dc.language.isoenen
dc.publisherThe Electrochemical 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.urihttp://jes.ecsdl.org/content/161/14/A1964.full.pdf+html
dc.rights© 2014 The Electrochemical Society.en
dc.subjectStainless steelen
dc.subjectCarbonen
dc.subjectCathodesen
dc.subjectDiamond filmsen
dc.subjectDiffusion in gasesen
dc.subjectElectric batteriesen
dc.subjectElectric current collectorsen
dc.subjectElectrodesen
dc.subjectLithiumen
dc.subjectLithium batteriesen
dc.subjectSubstratesen
dc.titleOn the use of gas diffusion layers as current collectors in Li-O2 batteriesen
dc.typeArticle (peer-reviewed)en
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
GDL_paper_rev.pdf
Size:
1.19 MB
Format:
Adobe Portable Document Format
Description:
Accepted version
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
2.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Chemistry - Journal Articles
Tyndall National Institute - Journal Articles