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US 9,543,564 B2Granted
Protective coatings for conversion material cathodes
AssigneeQuantumScape Corporation
InventorsRainer Fasching, Joseph Han, Jon Shan, Ghyrn E. Loveness, Eric Tulsky, Timothy Holme
Life of this patent
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Abstract
Battery systems using coated conversion materials as the active material in battery cathodes are provided herein. Protective coatings may be an oxide, phosphate, or fluoride, and may be lithiated. The coating may selectively isolate the conversion material from the electrolyte. Methods for fabricating batteries and battery systems with coated conversion material are also provided herein.
Claims16
An energy storage device comprising
- a. an anode,
- b. an electrolyte, and
- c. a cathode comprising
- a plurality of coated electrochemically active material particles, each electrochemically active material particle comprising
- a core comprising a conversion material, and
- a coating,
- wherein the conversion material is selected from ferric fluoride, ferrous fluoride, LiFeF3, or Li3FeF6;
- wherein the coating selectively isolates the conversion material from the electrolyte, and
- wherein the capacity of the active material is greater than about 300 mAh/g.
6 more elements
An energy storage device comprising
- a. an anode,
- b. an electrolyte, and
- c. a cathode comprising
- an ion conductor,
- a current collector,
- electrochemically active conversion material particles, each electrochemically active material particle comprising a core comprising a conversion material, and
- a coating,
- wherein the conversion material is selected from ferric fluoride, ferrous fluoride, LiFeF3, or Li3Fe6;
- wherein the coating selectively isolates the electrochemically active material from the electrolyte, and
- wherein the capacity of the active conversion material is greater than about 300 mAh/g.
7 more elements
Dependencies are inferred from the claim text.