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1. WO2019057271 - METHOD AND PROCESSING SYSTEM FOR FORMING A COMPONENT OF AN ELECTROCHEMICAL ENERGY STORAGE DEVICE AND OXIDATION CHAMBER

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[ EN ]

CLAIMS

1. A method for forming a component of an electrochemical energy storage device, comprising:

depositing a ceramic layer (52) over a flexible substrate (111); and

subjecting the ceramic layer (52) to an oxidizing atmosphere at an elevated temperature.

2. The method according to claim 1, wherein the ceramic layer (52) is an aluminum oxide layer.

3. The method according to claim 2, wherein the aluminum oxide layer is subjected to the oxidizing atmosphere in such a manner that a stoichiometry of the aluminum oxide layer is improved.

4. The method according to any one of claims 1 to 3, wherein the electrochemical energy storage device is a Li-ion battery.

5. The method according to any one of claims 1 to 4, wherein the component is a separator.

6. The method according to any one of claims 1 to 4, wherein the component is an electrode.

7. The method according to any one of claims 1 to 6, wherein the elevated temperature is equal to or greater than 50 °C, specifically equal to or greater than 60 °C, particularly equal to or greater than 80 °C, and/or equal to or smaller than 180 °C, specifically equal to or smaller than 120 °C, particularly equal to or smaller than 100 °C.

8. The method according to any one of claims 1 to 7, wherein the oxidizing atmosphere contains more than 20 vol.-% oxygen.

9. The method according to any one of claims 1 to 8, further comprising:

transporting the flexible substrate (111) from a first roll (22) to a second roll (24), the ceramic layer (52) being formed while the flexible substrate (111) is transported from the first roll (22) to the second roll (24).

10. The method according to claim 9, wherein the ceramic layer (52) is subjected to an oxidizing atmosphere while the flexible substrate (111) is transported from the first roll (22) to the second roll (24).

11. A processing system (100) for forming a component of an electrochemical energy storage device, comprising:

a deposition module (102) configured for depositing a ceramic layer(52) over a flexible substrate (111); and

an oxidation module (150) configured to subject the ceramic layer (52) to an oxidizing atmosphere at an elevated temperature.

12. The processing system according to claim 11, wherein the oxidation module (150) includes a gas assembly (151) configured to supply an oxidation gas and a heating assembly (154) configured to elevate a temperature of at least one of the supplied oxidation gas, the flexible substrate and the ceramic layer.

13. The processing system according to claim 11 or 12, further comprising:

a substrate transport mechanism including a first roll (22) and a second roll (24), the substrate transport mechanism being configured to transport the flexible substrate (111) along a transport path (P) from the first roll (22) to the second roll (24), the deposition module (102) and the oxidation module (150) being arranged along the transport path (P).

14. An oxidation chamber configured to oxidize a ceramic layer of a component of an electrochemical energy storage device, comprising:

a substrate transport mechanism including a first roll (222) and a second roll (224), the substrate transport mechanism being configured to transport a flexible substrate (111) along a transport path (Ρ') from the first roll (222) to the second roll (224), a ceramic layer (52) being formed on the flexible substrate (111); and

an oxidation module (150) arranged at the transport path (Ρ') between the first roll (222) and the second roll (224), the oxidation module (150) being configured to subject the ceramic layer (52) to an oxidizing atmosphere at an elevated temperature.

15. Oxidation chamber according to claim 14, further comprising:

a heating assembly (154) configured to elevate a temperature of at least one of the oxidation chamber (200), the oxidizing atmosphere, the flexible substrate (111) and the ceramic layer (52).