An Ether-Based Low Density Electrolyte for the Use of Graphite Anodes in Stable Lithium-Sulfur Batteries

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Florian S. Hoffmann - , Professur für Anorganische Chemie (I) (AC1), Fraunhofer Institute for Material and Beam Technology (Autor:in)
  • Florian Schmidt - , Professur für Anorganische Chemie (I) (AC1), Fraunhofer Institute for Material and Beam Technology (Autor:in)
  • Jannes Müller - , Technische Universität Braunschweig (Autor:in)
  • Kay Schönherr - , Fraunhofer Institute for Material and Beam Technology (Autor:in)
  • Susanne Dörfler - , Professur für Anorganische Chemie (I) (AC1), Fraunhofer Institute for Material and Beam Technology (Autor:in)
  • Thomas Abendroth - , Fraunhofer Institute for Material and Beam Technology (Autor:in)
  • Holger Althues - , Fraunhofer Institute for Material and Beam Technology (Autor:in)
  • Arno Kwade - , Technische Universität Braunschweig (Autor:in)
  • Nae Lih Wu - , National Taiwan University (Autor:in)
  • Stefan Kaskel - , Professur für Anorganische Chemie (I) (AC1), Fraunhofer Institute for Material and Beam Technology (Autor:in)

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

OriginalspracheEnglisch
Aufsatznummere202300093
Seitenumfang11
FachzeitschriftBatteries and Supercaps
Jahrgang6
Ausgabenummer6
PublikationsstatusVeröffentlicht - Juni 2023
Peer-Review-StatusJa

Externe IDs

WOS 000985047600001

Schlagworte

Schlagwörter

  • 3-electrode measurement, capacity balancing, energy conversions, intercalations, pouch cell characterization, Capacity balancing, Energy conversions, Intercalations, Pouch cell characterization