Patent ID: 11876188
Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. A sodium-sulfur cell comprising:
a. a sodium anode;
b. a microporous sulfur cathode, and
c. an electrolyte comprising:
i. a sodium salt;
ii. an additive comprising at least one additional metallic/metalloid cation having a standard reduction potential which is at least 2.5V more positive than that of sodium cation;
iii. wherein said sodium salt and said additive are dispersed in a solvent comprising at least one alkyl carbonate, and
iv. wherein the concentration of said metallic/metalloid cation in the electrolyte is 20 mM to 100 mM.