# US 2018/0026299 A1 · Method of Manufacturing High-Density Solid Electrolyte Thin Film Using Room-Temperature High-Speed Powder Spray Method

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- Number: US 2018/0026299 A1
- Document ID: US20180026299A1
- Status: Published application
- Kind: A1
- Application number: 15/377,247
- Filed: 2016-12-13
- Published: 2018-01-25
- Earliest claimed: 2016-07-21
- Assignees: Hyundai Motor Company
- Applicants: Hyundai Motor Company
- Inventors: Sam Ick SON; Eun Ji KWON
- Web page: https://patentgrep.com/patent/US20180026299A1

## CPC

- H01M 10/0562: Solid materials
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- B05B 7/14: designed for spraying particulate materials (B05B7/16 takes precedence)
- H01M 2300/0071: Oxides
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A method of manufacturing a high-density solid electrolyte thin film using a room-temperature high-speed powder spray method, nay include (a) preparing oxide-based solid electrolyte powder having an average particle size of 0.1 to 10 μm; (b) heat-treating the oxide-based solid electrolyte powder; and (c) forming an oxide-based solid electrolyte thin film by spraying the oxide-based solid electrolyte powder on an anode layer or a cathode layer by a room-temperature high-speed powder spray method.

## Claims

### Claim 1

A method of manufacturing a high-density solid electrolyte thin film using a room-temperature high-speed powder spray method, the method comprising:
(a) preparing oxide-based solid electrolyte powder having an average particle size of 0.1 to 10 μm;
(b) heat-treating the oxide-based solid electrolyte powder; and
(c) forming an oxide-based solid electrolyte thin film by spraying the oxide-based solid electrolyte powder on an anode layer or a cathode layer by the room-temperature high-speed powder spray method.

### Claim 2 (depends on 1)

The method of claim 1, wherein in the step (a), ball milling is performed for 1 to 5 minutes at 200 to 400 RPM.

### Claim 3 (depends on 1)

The method of claim 1, wherein in the step (b), heat-treating is performed for 4 to 6 hours at a temperature of 650 to 750° C.

### Claim 4 (depends on 1)

The method of claim 1, wherein in the step (c), the room-temperature high-speed powder spray method is performed under conditions in which a substrate transfer speed is 100 to 400 mm/min, a transfer distance between a substrate and a nozzle is 25 to 45 mm, and a width of the nozzle is 30 to 40 mm.

### Claim 5 (depends on 1)

The method of claim 1, wherein in the step (c), in the room-temperature high-speed powder spray method, N2 is injected as a transfer gas and a gas flow rate of the N2 is 30 to 40 l/min.

### Claim 6 (depends on 1)

The method of claim 1, wherein a thickness of the oxide-based solid electrolyte thin film formed in the step (c) is 1 to 200 μm.

### Claim 7 (depends on 1)

The method of claim 1, wherein ionic conductivity of the oxide-based solid electrolyte thin film formed in the step (c) is 1×10−7 to 3×10−7 S/cm.