Electrolyte Solvation and Ionic Association: Cyclic Carbonate and Ester-LiTFSI and -LiPF_6 Mixtures

摘要

Phase diagrams have been prepared for cyclic carbonate and ester mixtures with LiTFSI and LiPF_6. A Raman analysis of the mixtures enables the determination of the degree of solvation of the Li~+ cations. Key insight into the link between solvent structure and solvation is obtained. It was discovered that the solvent polarity parameters are poor indicators of the molecular-level solvation interactions.