https://scholars.lib.ntu.edu.tw/handle/123456789/632022
標題: | An Ether-Based Low Density Electrolyte for the Use of Graphite Anodes in Stable Lithium-Sulfur Batteries | 作者: | Hoffmann, Florian S. Schmidt, Florian Müller, Jannes Schönherr, Kay Dörfler, Susanne Abendroth, Thomas Althues, Holger Kwade, Arno NAE-LIH WU Kaskel, Stefan |
關鍵字: | 3-electrode measurement | capacity balancing | energy conversions | intercalations | pouch cell characterization | 公開日期: | 1-一月-2023 | 出版社: | WILEY-V C H VERLAG GMBH | 來源出版物: | Batteries and Supercaps | 摘要: | Lithium sulfur (Li−S) batteries represent an interesting technology due to the high theoretical capacity of sulfur and the low cost of the cathode material. Li−S cells with graphite electrodes could be an option for low-cost stationary energy storage as graphite is cheap and the electrode production process is well established. Unfortunately, in most Li−S electrolytes, graphite is not stable due to solvent co-intercalation and degrades fast. In this work, a new low density electrolyte based on hexyl methyl ether (HME) and 1,3-dioxalane (DOL) is presented, which allows to use graphite as anode material for Li−S batteries. In symmetric graphite vs. graphite cells an averaged Coulombic efficiency of 99.94 % per electrode could be reached. For the first time, cycling conditions like voltage window and balancing were optimized for Li−S cells with graphite anodes and the suitability of the concept could be demonstrated in multilayer pouch cells under realistic conditions. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/632022 | ISSN: | 2566-6223 | DOI: | 10.1002/batt.202300093 |
顯示於: | 化學工程學系 |
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