# US 12,763,336 B2 · Metal sheet, battery, nickel-zinc battery and method for manufacturing metal sheet

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- Number: US 12,763,336 B2
- Document ID: US12763336B2
- Status: Granted
- Kind: B2
- Application number: 18/258,053
- Filed: 2022-12-23
- Published: 2024-06-27
- Granted: 2026-10-13
- Earliest claimed: 2022-12-23
- Assignees: Sumitomo Electric Industries, Ltd.; Sumitomo Electric Toyama Co., Ltd.
- Applicants: Sumitomo Electric Industries, Ltd.; Sumitomo Electric Toyama Co., Ltd.
- Inventors: Tomoharu Takeyama; Kazuki Okuno; Masatoshi Majima; Hitoshi Tsuchida
- Web page: https://patentgrep.com/patent/US12763336B2

## CPC

- H01M 4/75: Wires, rods or strips
- H01M 4/70: characterised by shape or form
- H01M 4/74: Meshes or woven material; Expanded metal
- H01M 4/747: {Woven material}
- H01M 10/38: Construction or manufacture
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

A flat metal sheet has a principal surface located on one side along a thickness direction, a plurality of struts, and a node part where end portions of the plurality of struts are connected to one another. The strut and the node part form a mesh structure, and the plurality of the struts are in close contact with each other.

## Claims

### Claim 1

A flat metal sheet comprising:
a principal surface located on one side along a thickness direction;
a plurality of struts; and
a node part where end portions of the plurality of struts are connected to one another, wherein:
the strut and the node part form a mesh structure, and the plurality of the struts are in close contact with each other,
a thickness of the metal sheet is greater than or equal to 10 μm and less than or equal to 80 μm, and
the struts in close contact with each other are slidable at an interface when an external force is applied.

### Claim 2 (depends on 1)

The metal sheet as claimed in claim 1, wherein three or more of the plurality of struts are connected to the node part.

### Claim 3 (depends on 1)

The metal sheet as claimed in claim 1, wherein the strut has a strip shape.

### Claim 4 (depends on 1)

The metal sheet as claimed in claim 1, wherein the plurality of the struts at a twisted position has a laminated shape.

### Claim 5 (depends on 1)

The metal sheet as claimed in claim 1, wherein the strut has a thickness greater than or equal to 1 μm and less than or equal to 10 μm.

### Claim 6 (depends on 1)

The metal sheet as claimed in claim 1, wherein the strut has a length greater than or equal to 50 μm and less than or equal to 500 μm.

### Claim 7 (depends on 1)

The metal sheet as claimed in claim 1, wherein the strut has a width greater than or equal to 100 μm and less than or equal to 3000 μm.

### Claim 8 (depends on 1)

The metal sheet as claimed in claim 1, wherein the strut includes a portion having two or more layers and five or less layers of the strut laminated in the thickness direction of the metal sheet.

### Claim 9 (depends on 1)

The metal sheet as claimed in claim 1, wherein a thickness of the metal sheet is greater than or equal to 10 μm and less than or equal to 50 μm.

### Claim 10 (depends on 1)

The metal sheet as claimed in claim 1, wherein the metal sheet has a plurality of recesses at the principal surface.

### Claim 11 (depends on 10)

The metal sheet as claimed in claim 10, wherein
the metal sheet has a surface and an interior,
the surface includes the principal surface, a back surface located on an opposite side from the principal surface, and an outer peripheral surface of the metal sheet,
the interior is covered by the surface, and
a diameter of the recess at the principal surface is greater than or equal to 1 μm and less than or equal to 900 μm.

### Claim 12 (depends on 11)

The metal sheet as claimed in claim 11, wherein the metal sheet has an independent space in the interior, surrounded by the strut and the node part.

### Claim 13 (depends on 10)

The metal sheet as claimed in claim 10, wherein a diameter of the recess is not constant in the thickness direction of the metal sheet.

### Claim 14 (depends on 10)

The metal sheet as claimed in claim 10, wherein a number of the recesses at the principal surface is greater than or equal to 75 and less than or equal to 750 per 500 μm square.

### Claim 15 (depends on 1)

The metal sheet as claimed in claim 1, wherein the metal sheet has a plurality of through holes at the principal surface penetrating the metal sheet in the thickness direction.

### Claim 16 (depends on 15)

The metal sheet as claimed in claim 15, wherein the through hole has a hole diameter greater than or equal to 1 μm and less than or equal to 900 μm at the surface of the principal surface.

### Claim 17 (depends on 15)

The metal sheet as claimed in claim 15, wherein the hole diameter of the through hole is not constant in the thickness direction of the metal sheet.

### Claim 18 (depends on 15)

The metal sheet as claimed in claim 15, wherein a number of the through holes at the principal surface is greater than or equal to 250 and less than or equal to 2500 per 500 μm square.

### Claim 19 (depends on 1)

The metal sheet as claimed in claim 1, wherein a porosity is greater than or equal to 10% and less than or equal to 40%.