Electrolyte for use in sodium-sulfur batteries

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United States of America Patent

PATENT NO 11876188
APP PUB NO 20220367923A1
SERIAL NO

17773568

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present disclosure relates to an electrolyte comprising: a) a sodium salt; b) 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; wherein said sodium salt and said additive are dispersed in a solvent comprising at least one alkyl carbonate, and wherein the concentration of said metallic/metalloid cation in the electrolyte is 15 mM to 250 mM. The present disclosure also relates to a sodium-sulfur cell comprising a sodium anode, a microporous sulfur cathode, and the electrolyte as described herein. The present disclosure further provides a method of improving cycling life of a sodium-sulfur cell, wherein the sodium-sulfur cell comprising a sodium anode, a sulfur cathode, and an electrolyte containing a sodium salt dispersed in an alkyl carbonate solvent.

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Patent Owner(s)

Patent OwnerAddress
AGENCY FOR SCIENCE TECHNOLOGY AND RESEARCHSINGAPORE SINGAPORE CITY SINGAPORE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kumar, Vipin Singapore, SG 69 1007
Seh, Zhi Wei Singapore, SG 14 40

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