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- Nilsson Hallén, Jonathan, 1997, et al.
(author)
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Ionic Liquids: A Simple Model to Predict Ion Conductivity Based on DFT Derived Physical Parameters
- 2019
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In: Frontiers in Chemistry. - : Frontiers Media SA. - 2296-2646. ; 7:MAR
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Journal article (peer-reviewed)abstract
- A model able to a priori predict ion conductivities of ionic liquids (ILs) is a desired design tool. We here propose a set of simple conductivity models for ILs composed of small ions by only using data easily derived from standard DFT calculations as input; ion volume, ion mass, ion moment of inertia, and the ion-ion interaction strength. Hence these simple models are totally without any need for experimental parametrization. All model are made from fits of 22 ILs based on 12 different cations and 5 different anions, resulting in correlations vs. experiment of R-2 approximate to 0.95 and MAE of 25-36%. Given their (very) simple layout and how fast they can be applied (and re-used), the models allow for ample screening of new IL designs, while not aimed for perfect predictions per se.
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