(218i) Molecular Structure and Dynamics in Room Temperature Ionic Liquids – Insights from Molecular Experiment and Simulation

Authors: 
Cummings, P. T., Vanderbilt University
Li, S., Huazhong University of Science and Technology
Feng, G., Vanderbilt University
One the focuses of Cor Peterâ??s professional career has been on the thermodynamic properties of room temperature ionic liquids (RTILs) and phase equilibria in mixtures of RTILs and other components. In our group, we have a long-term interest in RTILs for their application in capacitative energy storage systems (specifically, so-called electrical double layer capacitors or supercapacitors). To this end, we have investigated, both computationally and experimentally, the RTIL/nanoporous carbon electrolyte/electrode combinations, in which the key issue for capacitative energy storage is the structure and dynamics in the electrical double layer formed at the electrolyte/electrode interface. Additionally, to contrast with the behavior at the interface, using a combination of molecular simulation and molecular experimental probes (including NMR, SAXS, and SANS), we have investigated the structure and dynamics of neat RTILs, RTIL mixtures and dicationic RTILs to understand their bulk behavior. We will provide an overview of this latter work in this presentation.