The effects of dielectric decrement and finite ion size on differential capacitance of electrolytically gated graphene

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dc.contributor.authorDaniels, Lindsey
dc.contributor.authorScott, Matthew
dc.contributor.authorMišković, Zoran L.
dc.date.accessioned2018-06-29T15:34:01Z
dc.date.available2018-06-29T15:34:01Z
dc.date.issued2018-06-01
dc.descriptionThe final publication is available at Elsevier via http://dx.doi.org/10.1016/j.cplett.2018.04.030 © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.description.abstractWe analyze the effects of dielectric decrement and finite ion size in an aqueous electrolyte on the capacitance of a graphene electrode, and make comparisons with the effects of dielectric saturation combined with finite ion size. We first derive conditions for the cross-over from a camel-shaped to a bell-shaped capacitance of the diffuse layer. We show next that the total capacitance is dominated by a V-shaped quantum capacitance of graphene at low potentials. A broad peak develops in the total capacitance at high potentials, which is sensitive to the ion size with dielectric saturation, but is stable with dielectric decrement.en
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (ZLM: Grant No. 2016-03689)en
dc.identifier.urihttps://doi.org/10.1016/j.cplett.2018.04.030
dc.identifier.urihttp://hdl.handle.net/10012/13452
dc.language.isoenen
dc.publisherElsevieren
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectGrapheneen
dc.subjectCapacitanceen
dc.subjectElectrolyteen
dc.subjectDielectric decrementen
dc.subjectSteric effectsen
dc.titleThe effects of dielectric decrement and finite ion size on differential capacitance of electrolytically gated grapheneen
dc.typeArticleen
dcterms.bibliographicCitationDaniels, L., Scott, M., & Mišković, Z. L. (2018). The effects of dielectric decrement and finite ion size on differential capacitance of electrolytically gated graphene. Chemical Physics Letters, 701, 43–51. https://doi.org/10.1016/j.cplett.2018.04.030en
uws.contributor.affiliation1Faculty of Mathematicsen
uws.contributor.affiliation2Applied Mathematicsen
uws.contributor.affiliation2Waterloo Institute for Nanotechnology (WIN)en
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen
uws.typeOfResourceTexten

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