Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Sceye Sa

Technische Universitát Dresden

Susanne Dörfler

Stefan Kaskel

Holger Althues

Christine Weller

David Kim

Benjamin Schumm

Mikkel Vestergaard Frandsen

Thomas Berger

Thomas Abendroth

Markus Hagen

Paul Hartel

Florian Wisser

Giovanni Mondin

A lithium sulfur battery with a low solvating electrolyte at an amount of less than 2 μl per mg sulfur. The electrolyte comprises dioxolane and hexylmethylether, as well as a Li salt, for example LiTSFi. The electrolyte is free from lithium nitrate, LiNO.

LiS battery with low solvating electrolyte

The invention relates to an electrolyte, which is provided for an alkali-sulfur battery (e.g. for a Li&#x2014;S battery). The electrolyte contains a non-polar, acyclic and non-fluorinated ether, a polar aprotic organic solvent, and a conducting salt for an alkali-sulfur battery. It has been found that, when such an electrolyte is used in an alkali-sulfur battery, a high-capacity, a low overvoltage, a high cycle stability, and a high Coulomb efficiency can be achieved in the alkali-sulfur battery and, in addition, as compared with an alkali-sulfur battery which contains a fluorinated ether in the electrolyte, a considerably improved gravimetric energy density is obtained. The invention further relates to a battery comprising the electrolyte according to the invention and to uses of the electrolyte according to the invention.

Electrolyte for an alkali-sulfur battery, alkali-sulfur battery containing the electrolyte, and uses of the electrolyte

The invention relates to a cathode unit for an alkaline metal/sulphur battery, containing a cathode arrester, which comprises a carbon substrate, and an electrochemically active component, which is selected from sulphur or an alkaline metal sulphide and is in electrically conductive contact with the carbon substrate.

Cathode unit for an alkaline metal/sulfur battery having an optimised arrester structure

Growing community of inventors

Dresden, Germany

Susanne Dörfler