Thermal conductivity and temperature profiles in carbon electrodes for supercapacitors

dc.bibliographicCitation.firstPage160
dc.bibliographicCitation.journalTitleJournal of Power Sourceseng
dc.bibliographicCitation.lastPage166
dc.bibliographicCitation.volume246
dc.contributor.authorBurheim, Odne S.
dc.contributor.authorAslan, Mesut
dc.contributor.authorAtchison, Jennifer S.
dc.contributor.authorPresser, Volker
dc.date.accessioned2016-03-24T17:36:58Z
dc.date.available2019-06-26T17:03:09Z
dc.date.issued2014
dc.description.abstractThe thermal conductivity of supercapacitor film electrodes composed of activated carbon (AC), AC with 15 mass% multi-walled carbon nanotubes (MWCNTs), AC with 15 mass% onion-like carbon (OLC), and only OLC, all mixed with polymer binder (polytetrafluoroethylene), has been measured. This was done for dry electrodes and after the electrodes have been saturated with an organic electrolyte (1 M tetraethylammonium-tetrafluoroborate in acetonitrile, TEA-BF4). The thermal conductivity data was implemented in a simple model of generation and transport of heat in a cylindrical cell supercapacitor systems. Dry electrodes showed a thermal conductivity in the range of 0.09-0.19 W K-1 m-1 and the electrodes soaked with an organic electrolyte yielded values for the thermal conductivity between 0.42 and 0.47 W K-1 m-1. It was seen that the values related strongly to the porosity of the carbon electrode materials. Modeling of the internal temperature profiles of a supercapacitor under conditions corresponding to extreme cycling demonstrated that only a moderate temperature gradient of several degrees Celsius can be expected and which depends on the ohmic resistance of the cell as well as the wetting of the electrode materials.eng
dc.description.versionpublishedVersioneng
dc.formatapplication/pdf
dc.identifier.urihttps://doi.org/10.34657/585
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/156
dc.language.isoengeng
dc.publisherAmsterdam : Elseviereng
dc.relation.doihttps://doi.org/10.1016/j.jpowsour.2013.06.164
dc.rights.licenseCC BY-NC-ND 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/eng
dc.subject.ddc540eng
dc.subject.othersupercapacitoreng
dc.subject.otherthermal conductivityeng
dc.subject.othertemperature profileseng
dc.subject.otherelectrochemical energy storageeng
dc.titleThermal conductivity and temperature profiles in carbon electrodes for supercapacitorseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorINMeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
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