Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 18, Issue 11, Pages 8165-8173Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cp00202a
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Funding
- Carl Tryggers foundation
- Swedish Research Council
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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.
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