Solution-phase deposition of thin films on solid-state electrolytes
AssigneeCoreshell Technologies, Incorporated
InventorsSourav Roger Basu, Jonathan Tan
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Abstract
Methods, systems, and compositions for the solution-phase deposition of thin films comprising one or more artificial solid-electrolyte interphase (SEI) layers. The thin films can be coated onto the surface of porous components of electrochemical devices, such as solid-state electrolytes employed in rechargeable batteries. The methods and systems provided herein involve exposing the component to be coated to different liquid reagents in sequential processing steps, with optional intervening rinsing and drying steps. Processing may occur in a single reaction chamber or multiple reaction chambers.
Claims27
A method for depositing a thin film comprising an artificial solid-electrolyte interphase (SEI) onto a surface of a solid-state electrolyte or a solid-state-electrolyte-electrode composite matrix, the method comprising:
- (a) providing the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix onto a conveyance apparatus;
- (b) transferring, by the conveyance apparatus, the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix to a first reaction chamber containing a first liquid solution comprising at least a first reagent;
- (c) exposing, by the conveyance apparatus, the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix to the first liquid solution in the first reaction chamber to yield a layer partially coated with the at least first reagent chemically bonded onto the surface of the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix;
- (d) rinsing, in the first reaction chamber, the layer with a first rinsing solution comprising a first solvent to remove unreacted first reagent;
- (e) transferring, by the conveyance apparatus, the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix from (d) to a second reaction chamber containing a second liquid solution comprising at least a second reagent;
- (f) exposing, by the conveyance apparatus, the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix to the second liquid solution in the second reaction chamber, wherein the at least second reagent reacts with the at least first reagent chemically bonded onto the surface of the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix to produce the artificial SEI thin film comprising a monolayer on the surface of the solid-state electrolyte or the solid-state-electrolyte-electrode composite matrix, the monolayer comprising a compound generated from the reaction of the at least first reagent and the at least second reagent;
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- (g) rinsing, in the second reaction chamber, the artificial SEI thin film with a second rinsing solution comprising a second solvent to remove unreacted second reagent.
Dependencies are inferred from the claim text.