Metal porous body, method of producing the same, and fuel cell

Patent metadata

Field	Value
Publication number	US-2021083301-A1
Application number	US-201916971786-A
Country	US
Kind code	A1
Filing date	Jan 9, 2019
Priority date	Feb 27, 2018
Publication date	Mar 18, 2021
Grant date	—

Abstract

A metal porous body having a frame of a three-dimensional network structure, the frame being formed of a plurality of bone members connected to each other, the plurality of bone members defining openings in a surface of the metal porous body, the plurality of bone members defining voids inside the metal porous body, the openings and the voids communicating with each other, a porosity being from 1 volume % to 55 volume %, a density being from 3 g/cm3 to 10 g/cm3.

First claim

1 : A metal porous body having a frame of a three-dimensional network structure,
the frame being formed of a plurality of bone members connected to each other, the plurality of bone members defining openings in a surface of the metal porous body, the plurality of bone members defining voids inside the metal porous body, the openings and the voids communicating with each other, a porosity being from 1 volume % to 55 volume %, a density being from 3 g/cm 3 to 10 g/cm 3 .

2 : The metal porous body according to claim 1 , wherein a diameter of the openings is from 3 μm to 55 μm.

3 : The metal porous body according to claim 1 , wherein the metal porous body has a sheet-like outer shape and a thickness from 0.05 mm to 0.2 mm.

4 : A method of producing a metal porous body, comprising:
a first step involving preparing a metal material having a frame of a three-dimensional network structure; and a second step involving pressing the metal material.

5 : The method of producing a metal porous body according to claim 4 , wherein
in the second step, a plurality of the metal materials are stacked so that the metal materials overlap at least partially, and parts thus overlapping are pressed.

6 : A fuel cell comprising:
a cathode; an anode; an electrolyte layer interposed between the cathode and the anode; and the metal porous body according to claim 1 disposed to face at least one of the cathode and the anode.

Assignees

• Sumitomo Electric Industries

Inventors

• Hiraiwa Chihiro
• Majima Masatoshi
• Higashino Takahiro
• Mizuhara Naho
• Tawarayama Hiromasa

Classifications

• Y02E60/50

  Fuel cells · CPC title

• B22F3/1137

  by coating porous removable preforms · CPC title

• H01M8/0232 Primary

  Metals or alloys · CPC title

• H01M2008/1293

  Fuel cells with solid oxide electrolytes · CPC title

• B22F7/08

  with one or more parts not made from powder {(B22F7/062 takes precedence)} · CPC title