Method of manufacturing lithium battery
AssigneeExcellatron Solid State, LLC
InventorsJi-Guang Zhang, Lonnie G. Johnson, Steve Buckingham
Life of this patent
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Abstract
A thin-film battery (10) is disclosed which includes a cathode current collector (11), a cathode (12), an electrolyte (13), an anode (14), and an anode current collector (15). The cathode is produced by grinding lithium cobalt oxide or other suitable cathode material to a powder having a mean particle size of between 5 and 12 microns, forming a liquid slurry with the cathode material, casting the liquid slurry upon a substrate, drying the liquid slurry to form a layer of cathode material, and compressing the cathode layer to a generally uniform and smooth thickness of between 5 and 12 microns. The compressed layer is then heated to a temperature which sinters or melts the peripheral edges of the cathode particles together.
Claims13
A method of producing a thin film battery cathode comprising the steps of:
- (A) providing a mass of powdered cathode material;
- (B) providing a substrate;
- (C) forming a liquid slurry with the cathode material;
- (D) casting the liquid slurry upon the substrate;
- (E) drying the liquid slurry to form a layer of cathode material;
- (F) compressing the cathode layer to a generally uniform thickness;
- and
- (G) heating the cathode layer to at least 250 degrees Celsius.
A method of producing a thin film battery cathode comprising the steps of:
- (A) providing a mass of powdered cathode material having a mean particle size of between 5 and 12 microns;
- (B) forming a liquid slurry with the cathode material;
- (C) casting the liquid slurry upon a substrate;
- (D) drying the liquid slurry to form a layer of cathode material;
- (E) compressing the cathode layer to a generally uniform thickness of between 5 and 12 microns, and
- (F) heating the cathode layer to at least 250 degrees Celsius.
Dependencies are inferred from the claim text.