Effect of Salt Concentration, Solvent Donor Number and Coordination Structure on the Variation of the Li/Li+ Potential in Aprotic Electrolytes
Kottam, P. K. R.
Energies ; 13 (2020), 6. - Art.-Nr. 1470. - eISSN 1996-1073
Link to original publicationhttps://dx.doi.org/10.3390/en13061470
InstitutionsZentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW)
Document versionpublished version (publisher's PDF)
The use of concentrated aprotic electrolytes in lithium batteries provides numerous potential applications, including the use of high-voltage cathodes and Li-metal anodes. In this paper, we aim at understanding the effect of salt concentration on the variation of the Li/Li+ Quasi-Reference Electrode (QRE) potential in Tetraglyme (TG)-based electrolytes. Comparing the obtained results to those achieved using Dimethyl sulfoxide DMSO-based electrolytes, we are now able to take a step forward and understand how the effect of solvent coordination and its donor number (DN) is attributed to the Li-QRE potential shift. Using a revised Nernst equation, the alteration of the Li redox potential with salt concentration was determined accurately. It is found that, in TG, the Li-QRE shift follows a different trend than in DMSO owing to the lower DN and expected shorter lifespan of the solvated cation complex.
Subject headings[GND]: Lithium | Ferrocen
[Free subject headings]: reference electrode | high concentrated electrolytes | Nernst equation | cyclic voltammetry | donor number
[DDC subject group]: DDC 540 / Chemistry & allied sciences
LicenseCC BY 4.0 International
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DOI & citation
Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-40039