Metal porous body

Patent metadata

Field	Value
Publication number	US-12451478-B2
Application number	US-202318274880-A
Country	US
Kind code	B2
Filing date	Jan 20, 2023
Priority date	Mar 24, 2022
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A metal porous body includes: a metal framework; and a separation wall formed in one piece with the metal framework, the separation wall being composed of the same material as a material of the metal framework. A plurality of cells each having a polyhedral shape exist inside the metal porous body. A side of the polyhedral shape is constituted of the metal framework. A location in which an opening of a cell of the plurality of cells is closed by the separation wall exists inside the metal porous body, the opening being defined by a side of a polyhedral shape of the cell.

First claim

The invention claimed is:

1. A metal porous body comprising:
a metal framework;
a separation wall formed in one piece with the metal framework, the separation wall being composed of a same material as a material of the metal framework;
a plurality of cells each having a polyhedral shape exist inside the metal porous body, wherein a side of the polyhedral shape is constituted of the metal framework; and
a closed cell in which an opening of a cell of the plurality of cells is closed by the separation wall exists inside the metal porous body, the opening being defined by a side of the polyhedral shape of adjacent cells among the plurality of cells,
wherein the separation wall is integrally formed with the metal framework so as to completely close the opening, such that the closed cell is non-communicating with the adjacent cells.

2. The metal porous body according to claim 1 , wherein a metal layer of the metal framework is composed of a metal material having a Vickers hardness of less than 600 Hv.

3. The metal porous body according to claim 1 , wherein a metal layer of the metal framework is composed of a metal material having a Vickers hardness of 350 Hv or less.

4. The metal porous body according to claim 1 , wherein a metal layer of the metal framework is composed of a metal material having a Vickers hardness of 100 Hv or less.

5. The metal porous body according to claim 2 , wherein a thickness of the metal layer is 0.3 μm or more and 10 μm or less.

6. The metal porous body according to claim 2 , wherein the metal framework is composed of tin and a content of the tin is 99.99 mass % or more.

7. The metal porous body according to claim 1 , wherein a metal layer of the metal framework is constituted of a layer of calcined tin particles.

8. The metal porous body according to claim 1 , wherein the metal framework and the separation wall form a continuous, unitary metallic structure within an interior region of the metal porous body.

Assignees

• Sumitomo Electric Industries
• Sumitomo Electric Toyama Co

Inventors

• Takeyama Tomoharu
• Okuno Kazuki
• Ogawa Mitsuyasu
• Hosoe Akihisa
• Tsuchida Hitoshi
• Majima Masatoshi
• Nishimura Junichi
• Fujimaki Akihiro

Classifications

• H01M2004/027

  Negative electrodes · CPC title

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title

• H01M4/1395 Primary

  of electrodes based on metals, Si or alloys · CPC title

• B22F2301/30

  Low melting point metals, i.e. Zn, Pb, Sn, Cd, In, Ga · CPC title

• C22C1/08

  Alloys with open or closed pores · CPC title