Molecular Dynamics simulations of concentrated aqueous electrolyte solutions

Details Molecular Dynamics simulations of concentrated aqueous electrolyte solutions Molecular Dynamics simulations of concentrated aqueous electrolyte solutions

2010-05-17

arxiv.org/abs/1005.2857v1

Molecular Simulation 37 Issue 2, 123 (2011)

Physics

Condensed Matter

Materials Science

Scientific paper

Transport properties of concentrated electrolytes have been analyzed using classical molecular dynamics simulations with the algorithms and parameters typical of simulations describing complex electrokinetic phenomena. The electrical conductivity and transport numbers of electrolytes containing monovalent (KCl), divalent (MgCl$_2$), a mixture of both (KCl + MgCl$_2$), and trivalent (LaCl$_3$) cations have been obtained from simulations of the electrolytes in electric fields of different magnitude. The results obtained for different simulation parameters have been discussed and compared with experimental measurements of our own and from the literature. The electroosmotic flow of water molecules induced by the ionic current in the different cases has been calculated and interpreted with the help of the hydration properties extracted from the simulations.

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