Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 144, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4943392
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Funding
- PSL Research University (COOCAR) [ANR-10-IDEX-0001-02]
- Agence Nationale pour la Recherche (ELECTROLITH) [ANR-2010-BLAN-621-03]
- GENCI Grant [2015-082309]
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We use molecular dynamics simulations to study the thermodynamics, structure, and dynamics of the Li2CO3-K2CO3 (62: 38 mol. %) eutectic mixture. We present a new classical non-polarizable force field for this molten salt mixture, optimized using experimental and first principles molecular dynamics simulations data as reference. This simple force field allows efficient molecular simulations of phenomena at long time scales. We use this optimized force field to describe the behavior of the eutectic mixture in the 900-1100 K temperature range, at pressures between 0 and 5 GPa. After studying the equation of state in these thermodynamic conditions, we present molecular insight into the structure and dynamics of the melt. In particular, we present an analysis of the temperature and pressure dependence of the eutectic mixture's self-diffusion coefficients, viscosity, and ionic conductivity. (C) 2016 AIP Publishing LLC.
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