Patent · US Active

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

US11594760B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Christine Weller · Dresden, DE
Holger Althues · Dresden, DE
Susanne Dörfler · Dresden, DE
Stefan Kaskel · Dresden, DE

Key dates

Filing date	May 30, 2018
Grant date	Feb 28, 2023
Priority date	—
Expiry date	Mar 19, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an electrolyte, which is provided for an alkali-sulfur battery (e.g. for a Li—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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.