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Fused coarse-grained model of aromatic ionic liquids and their behaviour at electrodes
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.). KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.
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2016 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 18, no 11, 8165-8173 p.Article in journal (Refereed) Published
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Abstract [en]

A fused coarse-grained model of aromatic ionic liquids 1-alkyl-3-methylimidazoliums tetrafluoroborate ([CnMIM+][BF4-]) has been constructed. Structural and dynamical properties calculated from our model are compared with experimental data as well as with corresponding results from simulations of other suggested models. Specifically, we adopt a fused-sphere coarse-grained model for cations and anions. This model is utilized to study structure and differential capacitance in models of flat and porous carbon electrodes. We find that the capacitance varies with pore size, in a manner that is related to the packing of ions inside the pore. For very narrow pores, diffusion is slow and the establishment of thermodynamic equilibrium may exceed the practical limits for our molecular dynamics simulations.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2016. Vol. 18, no 11, 8165-8173 p.
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Chemical Sciences
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URN: urn:nbn:se:kth:diva-185058DOI: 10.1039/c6cp00202aISI: 000372229700063PubMedID: 26928079Scopus ID: 2-s2.0-84960540825OAI: oai:DiVA.org:kth-185058DiVA: diva2:920058
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QC 20160415

Available from: 2016-04-15 Created: 2016-04-11 Last updated: 2016-04-15Bibliographically approved

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