Methods and reagents for enhancing the cycling efficiency of lithium polymer batteries

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United States of America Patent

PATENT NO 6017651
SERIAL NO

09148024

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Batteries including a lithium electrode and a sulfur counter electrode that demonstrate improved cycling efficiencies are described. In one embodiment, an electrochemical cell having a lithium electrode and a sulfur electrode including at least one of elemental sulfur, lithium sulfide, and a lithium polysulfide is provided. The lithium electrode includes a surface coating that is effective to increase the cycling efficiency of said electrochemical cell. In a more particular embodiment, the lithium electrode is in an electrolyte solution, and, more particularly, an electrolyte solution including either elemental sulfur, a sulfide, or a polysulfide. In another embodiment, the coating is formed after the lithium electrode is contacted with the electrolyte. In a more particular embodiment, the coating is formed by a reaction between the lithium metal of the lithium electrode and a chemical species present in the electrolyte.

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Patent Owner(s)

Patent OwnerAddress
POLYPLUS BATTERY COMPANY2424 SIXTH STREET BERKELEY CA 94710

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, May-Ying Oakland, CA 29 4219
Nimon, Yevgeniy S Walnut Creek, CA 156 8490
Visco, Steven J Berkeley, CA 211 13471

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