Loading patent…
AssigneePolyPlus Battery Company
InventorsYevgeniy S. Nimon, May-Ying Chu, Steven J. Visco
Estimating the term…
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.
An electrochemical cell, comprising a lithium electrode and a sulfur electrode including at least one of elemental sulfur, lithium sulfide, and a lithium polysulfide, said lithium electrode having a lithium metal electrode surface including a surface coating that is effective to increase the cycling efficiency of said electrochemical cell.
An electrochemical cell, comprising an electrode and an electrolyte containing one or more sulfur compounds including at least one of elemental sulfur, sulfides, and polysulfides, said electrolyte including a reagent that is effective to form a substantially insoluble metal-sulfide complex in said electrolyte to increase thereby the cycling efficiency of said electrode.
An electrochemical cell, comprising a lithium-tin alloy, the surface of said electrode including a lithium oxide coating, and a sulfur electrode including at least one of elemental sulfur, a lithium sulfide, or a lithium polysulfide.
A battery cell comprising:
A battery cell comprising:
Dependencies are inferred from the claim text.