An Ether-Based Low Density Electrolyte for the Use of Graphite Anodes in Stable Lithium-Sulfur Batteries
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
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.
Details
Originalsprache | Englisch |
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Aufsatznummer | e202300093 |
Seitenumfang | 11 |
Fachzeitschrift | Batteries and Supercaps |
Jahrgang | 6 |
Ausgabenummer | 6 |
Publikationsstatus | Veröffentlicht - Juni 2023 |
Peer-Review-Status | Ja |
Externe IDs
WOS | 000985047600001 |
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Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- 3-electrode measurement, capacity balancing, energy conversions, intercalations, pouch cell characterization, Capacity balancing, Energy conversions, Intercalations, Pouch cell characterization