Electrolyte additives for lithium sulfur rechargeable batteries
AssigneeGM Global Technology Operations LLC
InventorsLi Yang, Mei Cai, Minghong Liu
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Abstract
An electrolyte solution for a lithium sulfur battery contains a lithium oxalatoborate compound in a 0.05-2 M solution in conventional lithium sulfur battery electrolyte solvents, optionally with other lithium compounds. Examples of solvents include dimethoxyethane (DME), dioxolane, and triethyleneglycol dimethyl ether (TEGDME). Electrochemical cells contain a lithium anode, a sulfur-containing cathode, and a non-aqueous electrolyte containing the lithium oxalatoborate compound. Lithium sulfur batteries contain a casing enclosing a plurality of the cells.
Claims20
An electrolyte solution for a lithium sulfur battery comprising 0.05 to 4 M lithium oxalatoborate compound in a solvent comprising organic ethers.
An electrochemical cell comprising:
- a. a positive electrode comprising an electroactive sulfur containing material;
- b. a negative electrode comprising lithium;
- and
- c. a non-aqueous electrolyte, wherein the electrolyte comprises a lithium oxalatoborate compound.
Dependencies are inferred from the claim text.