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Relevance of ion clusters for Li transport at elevated salt concentrations in [Pyr12O1][FTFSI] ionic liquid-based electrolytes

: Brinkkötter, Marc; Giffin, Guinevere A.; Moretti, Arianna; Jeong, Sangsik; Passerini, Stefano; Schönhoff, Monika


Chemical communications 54 (2018), Nr.34, S.4278-4281
ISSN: 0022-4936
ISSN: 0009-241X
ISSN: 1359-7345
Fraunhofer ISC ()
Lithiumionenleiter; Elektrolyte

In binary ionic liquid/Li salt mixtures with the novel asymmetric anion FTFSI, electrophoretic mobility μi values of all ion species were determined using electrophoretic NMR. Li was determined to migrate in negatively charged Li-anion clusters towards the anode. This vehicular transport mechanism was shown to have decreasing relevance at elevated salt concentrations.