dc.date.accessioned | 2022-06-30T15:43:41Z | |
dc.date.available | 2022-06-30T15:43:41Z | |
dc.date.created | 2022-05-25T13:53:57Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Ma, Ke Janssen, Mathijs Adriaan Lian, Cheng Van Roij, René . Dynamic density functional theory for the charging of electric double layer capacitors. Journal of Chemical Physics. 2022, 156(8) | |
dc.identifier.uri | http://hdl.handle.net/10852/94553 | |
dc.description.abstract | We consider the charging of a model capacitor comprised of two planar electrodes and an electrolyte. Upon switching on a voltage difference, electric double layers build up in this setup, which we characterize with a classical dynamic density functional theory (DDFT) that accounts for electrostatic correlations and for molecular excluded volume of finite-sized ions and solvent molecules. Our DDFT predicts the electrode charge Q( t) to form exponentially with two timescales: at early times, the system relaxes on the RC time, namely, λ D L/[ D(2 + σ/ λ D )], with λ D being the Debye length, L being the electrode separation, σ being the ion diameter, and D being the ionic diffusivity. Contrasting an earlier DDFT study, this early-time response does not depend on the applied potential. At late times, the capacitor relaxes with a relaxation time proportional to the diffusion time L 2 / D. | |
dc.language | EN | |
dc.title | Dynamic density functional theory for the charging of electric double layer capacitors | |
dc.title.alternative | ENEngelskEnglishDynamic density functional theory for the charging of electric double layer capacitors | |
dc.type | Journal article | |
dc.creator.author | Ma, Ke | |
dc.creator.author | Janssen, Mathijs Adriaan | |
dc.creator.author | Lian, Cheng | |
dc.creator.author | Van Roij, René | |
cristin.unitcode | 185,15,13,0 | |
cristin.unitname | Matematisk institutt | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 2027403 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Chemical Physics&rft.volume=156&rft.spage=&rft.date=2022 | |
dc.identifier.jtitle | Journal of Chemical Physics | |
dc.identifier.volume | 156 | |
dc.identifier.issue | 8 | |
dc.identifier.pagecount | 0 | |
dc.identifier.doi | https://doi.org/10.1063/5.0081827 | |
dc.identifier.urn | URN:NBN:no-97072 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0021-9606 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/94553/1/ma2022dynamic_cristin.pdf | |
dc.type.version | AcceptedVersion | |
cristin.articleid | 084101 | |