Stabilizing Effect of Polysulfides on Lithium Metal Anodes in Sparingly Solvating Solvents
Reuter FS, Huang CJ, Hsieh YC, Doerfler S, Brunklaus G, Althues H, Winter M, Lin SD, Hwang BJ, Kaskel S (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 4
Pages Range: 347-358
Journal Issue: 2
Abstract
Electrolytes with sparingly polysulfide solubility such as 1.5 M LiTFSI in tetramethylene sulfone (TMS) and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE) are beneficial for the cycle stability of Li−S pouch cells. In this work, this specific electrolyte system and the role of dissolved polysulfides (PS) in symmetrical Li/Li cells is investigated. By studying varying TMS/TTE volume ratios and polysulfide addition aided by both ex situ and operando spectroscopic as well as microscopic techniques, the positive impact of PS on the lithium plating/stripping behavior is evaluated. The composition of the solid-electrolyte interphase (SEI) as well as the microscopic morphology differs for electrolytes with PS from those without PS addition. These findings are crucial for the development of electrolytes for cycle-stable Li−S prototype cells.
Involved external institutions
Technische Universität Dresden
Germany (DE)
National Taiwan University of Science and Technology (NTUST) / 國立臺灣科技大學 / Taiwan Tech / 臺科大
Taiwan (TW)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology
Germany (DE)
Germany (DE)
National Taiwan University of Science and Technology (NTUST) / 國立臺灣科技大學 / Taiwan Tech / 臺科大
Taiwan (TW)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology
Germany (DE)
How to cite
APA:
Reuter, F.S., Huang, C.-J., Hsieh, Y.-C., Doerfler, S., Brunklaus, G., Althues, H.,... Kaskel, S. (2021). Stabilizing Effect of Polysulfides on Lithium Metal Anodes in Sparingly Solvating Solvents. Batteries & Supercaps, 4(2), 347-358. https://doi.org/10.1002/batt.202000190
MLA:
Reuter, Florian S., et al. "Stabilizing Effect of Polysulfides on Lithium Metal Anodes in Sparingly Solvating Solvents." Batteries & Supercaps 4.2 (2021): 347-358.
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