# US 2021/0280845 A1 · Lithium-Ion Galvanic Cells

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- Number: US 2021/0280845 A1
- Document ID: US20210280845A1
- Status: Published application
- Kind: A1
- Application number: 16/338,773
- Filed: 2017-10-05
- Published: 2021-09-09
- Earliest claimed: 2016-10-11
- Assignees: CPT Group GmbH
- Applicants: CPT Group GmbH
- Inventors: Udo Kreißig; Andreas Lenk; Uwe Scharf; Rene Möller; Rene Böhm; Jana Fuchs; Daniel Haase
- Web page: https://patentgrep.com/patent/US20210280845A1

## CPC

- H01M 4/0407: {by coating on an electrolyte layer}
- H01M 4/0409: {by a doctor blade method, slip-casting or roller coating}
- H01M 4/0423: {Physical vapour deposition}
- H01M 4/139: Processes of manufacture
- H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)}
- H01M 10/045: {Cells or batteries with folded plate-like electrodes}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/0562: Solid materials
- H01M 10/0565: Polymeric materials, e.g. gel-type or solid-type
- H01M 10/0583: of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
- H01M 50/46: Separators, membranes or diaphragms characterised by their combination with electrodes
- H01M 50/538: Connection of several leads or tabs of wound or folded electrode stacks
- 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
- 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

Various embodiments include a method for producing a galvanic lithium-ion cell comprising: separating a first electrode material from a second electrode material using a separator; and applying the first electrode material to a first side of the separator by coating.

## Claims

### Claim 1

A method for producing a galvanic lithium-ion cell, the method comprising:
separating a first electrode material from a second electrode material using a separator; and
applying the first electrode material to a first side of the separator by coating.

### Claim 2 (depends on 1)

The method as claimed in claim 1, further comprising applying the second electrode material to a second side opposite the first side of the separator by coating.

### Claim 3 (depends on 1)

The method as claimed in claim 1, wherein the separator comprises a solid-state electrolyte membrane.

### Claim 4 (depends on 1)

The method as claimed in claim 1, further comprising forming a multiplicity of folding points in the separator;
wherein the first electrode material and the separator arrangement are folded in mutually opposing directions at consecutive folding points.

### Claim 5 (depends on 4)

The method as claimed in claim 4, further comprising forming at least one of the multiplicity of folding points by at least partly removing the electrode material from the separator at the folding point.

### Claim 6 (depends on 4)

The method as claimed in claim 4, further comprising reducing a thickness of the separator at the at least one folding point.

### Claim 7 (depends on 1)

The method as claimed in claim 1, further comprising applying a collector layer to the separator; and
wherein applying the electrode material comprising physical vapor deposition or using a rotating cylinder.

### Claim 8 (depends on 7)

The method as claimed in claim 7, further comprising producing an electrically conductive connection between the collector layer and an electrical conductor.

### Claim 9 (depends on 8)

The method as claimed in claim 8, wherein the electrically conductive connection is produced at folding points between the collector layer and the electrical conductor.

### Claim 10 (depends on 1)

The method as claimed in claim 1, wherein the electrode material is applied to the separator by way of at least one rotating cylinder.

### Claim 11

(canceled)

### Claim 12 (depends on 4)

The method as claimed in claim 4, further comprising forming at least one of the multiplicity of folding points by applying, at one of the folding points, the electrode material to the separator with a layer thickness that is reduced in comparison with regions adjoining the folding point.