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Self‐Diffusion Coefficients in Solutions of Lithium Bis(fluorosulfonyl)imide with Dimethyl Carbonate and Ethylene Carbonate
Organic solutions of lithium bis(fluorosulfonyl)imide (LiFSI) are promising electrolytes for Li‐ion batteries. Information on the diffusion coefficients of the species in these solutions is needed for battery design. Therefore, the self‐diffusion coefficients in such solutions were studied experimentally with the pulsed‐field gradient nuclear magnetic resonance technique. The self‐diffusion coefficients of the ions Li+ and FSI− as well as those of the solvents were measured for LiFSI solutions in pure dimethyl carbonate and ethylene carbonate as well as in mixtures of these solvents at 298 K and ambient pressure. Despite the Li+ ion being the smallest species in the solution, its self‐diffusion coefficient is the lowest as a result of its strong coordination with the solvent molecules.
Self‐Diffusion Coefficients in Solutions of Lithium Bis(fluorosulfonyl)imide with Dimethyl Carbonate and Ethylene Carbonate
Organic solutions of lithium bis(fluorosulfonyl)imide (LiFSI) are promising electrolytes for Li‐ion batteries. Information on the diffusion coefficients of the species in these solutions is needed for battery design. Therefore, the self‐diffusion coefficients in such solutions were studied experimentally with the pulsed‐field gradient nuclear magnetic resonance technique. The self‐diffusion coefficients of the ions Li+ and FSI− as well as those of the solvents were measured for LiFSI solutions in pure dimethyl carbonate and ethylene carbonate as well as in mixtures of these solvents at 298 K and ambient pressure. Despite the Li+ ion being the smallest species in the solution, its self‐diffusion coefficient is the lowest as a result of its strong coordination with the solvent molecules.
Self‐Diffusion Coefficients in Solutions of Lithium Bis(fluorosulfonyl)imide with Dimethyl Carbonate and Ethylene Carbonate
Neuhaus, Johannes (author) / Bellaire, Daniel (author) / Kohns, Maximilian (author) / von Harbou, Erik (author) / Hasse, Hans (author)
Chemie Ingenieur Technik ; 91 ; 1633-1639
2019-11-01
7 pages
Article (Journal)
Electronic Resource
English
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