Surface-coated metal porous body

Patent metadata

Field	Value
Publication number	US-2024150910-A1
Application number	US-202017766606-A
Country	US
Kind code	A1
Filing date	Jun 25, 2020
Priority date	Oct 7, 2019
Publication date	May 9, 2024
Grant date	—

Abstract

Provided is a surface-coated metal porous body having a three-dimensional network structure, the surface-coated metal porous body including: a framework forming the three-dimensional network structure; and a coating film provided on a surface of the framework, wherein the framework has a body including a metal element as a constituent element, the coating film includes a scale-like carbon material and a fine-grained conductive material, a distance D between two points that are farthest from each other on an outer perimeter of a main surface of the scale-like carbon material is 5% or more and 120% or less relative to a thickness of the framework, and the scale-like carbon material is deposited on the surface of the framework.

First claim

1 . A surface-coated metal porous body having a three-dimensional network structure, the surface-coated metal porous body comprising:
a framework forming the three-dimensional network structure; and a coating film provided on a surface of the framework, wherein the framework has a body including a metal element as a constituent element, the coating film includes a scale-like carbon material and a fine-grained conductive material, a distance D between two points that are farthest from each other on an outer perimeter of a main surface of the scale-like carbon material is 5% or more and 120% or less relative to a thickness of the framework, and the scale-like carbon material is deposited on the surface of the framework.

2 . The surface-coated metal porous body according to claim 1 , wherein the coating film has a thickness of 0.2 μm or more and 100% or less of a thickness of the body of the framework.

3 . The surface-coated metal porous body according to claim 1 or 2 , wherein the scale-like carbon material includes graphite.

4 . The surface-coated metal porous body according to any one of claims 1 to 3 , wherein the scale-like carbon material has an aspect ratio of 5 or more and 100 or less.

5 . The surface-coated metal porous body according to any one of claims 1 to 4 , wherein the fine-grained conductive material includes at least one selected from the group consisting of carbon black, titanium, spheroidal graphite, and stainless steel.

6 . The surface-coated metal porous body according to any one of claims 1 to 5 , wherein the metal element in the body of the framework includes at least one selected from the group consisting of nickel, aluminum, copper, chromium, and tin.

7 . The surface-coated metal porous body according to any one of claims 1 to 6 , wherein, when the body of the framework is observed in cross section at a magnification of 3,000 times to obtain an observed image, the observed image presents in any area 10 μm square thereof five or less voids each having a longer diameter of 1 μm or more.

8 . The surface-coated metal porous body according to any one of claims 1 to 7 , wherein the framework is hollow.

Assignees

• Sumitomo Electric Industries
• Sumitomo Electric Toyama Co

Inventors

• Okuno Kazuki
• Majima Masatoshi
• Tsuchida Hitoshi

Classifications

• C25B11/031 Primary

  Porous electrodes · CPC title

• C25B11/04

  characterised by the material · CPC title

• H01M4/8605

  Porous electrodes · CPC title

• H01M4/8657

  layered · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title