Protective anode coatings for high energy batteries
AssigneeNorthwestern University
InventorsVinay Ishwar Hegde, David H. Snydacker, Christopher M. Wolverton
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Abstract
Materials for coating a metal anode in a high energy battery, anodes coated with the materials, and batteries incorporating the coated anodes are provided. Also provided are batteries that utilize the materials as electrolytes. The coatings, which are composed of binary, ternary, and higher order metal and/or metalloid oxides, nitrides, fluorides, chlorides, bromides, sulfides, and carbides limit the reactions between the electrolyte and the metal anode in a battery, thereby improving the performance of the battery, relative to a battery that employs a bare anode.
Claims17
A coated anode comprising:
- an anode comprising lithium metal or an alloy of lithium with one or more additional metal elements;
- and
- a coating on at least a portion of the anode, wherein the coating comprises a metal sulfide selected from SrS, CaS, YbS, and combinations thereof.
A lithium battery comprising:
- a coated anode comprising:
- an anode comprising lithium metal or an alloy of lithium with one or more additional metal elements;
- and
- a coating on at least a portion of the anode, wherein the coating comprises a metal sulfide selected from SrS, CaS, YbS, and combinations thereof;
- a cathode in electrical communication with the metal anode;
- and
- an electrolyte disposed between the coated anode and the cathode.
Dependencies are inferred from the claim text.