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

Patent metadata

Field	Value
Publication number	US-12074349-B2
Application number	US-201916971786-A
Country	US
Kind code	B2
Filing date	Jan 9, 2019
Priority date	Feb 27, 2018
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

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/cm 3 to 10 g/cm 3 .

First claim

The invention claimed is:

1. A fuel cell comprising:
a cathode;
an anode;
an electrolyte layer interposed between the cathode and the anode; and
a metal porous body having a frame of a three-dimensional network structure, wherein
the metal porous body is disposed to face at least one of the cathode and the anode,
the frame is formed of a plurality of bone members connected to each other,
the plurality of bone members define openings in a surface of the metal porous body,
the plurality of bone members define voids inside the metal porous body,
the openings and the voids communicate with each other,
a porosity is from 1 volume % or more to 10 volume % or less,
a density is from 3 g/cm 3 to 10 g/cm 3 ,
a diameter of the openings is 3 um or more and less than 5 um, and
the fuel cell generates electricity at a maximum power density of 291-348 mW/cm 2 .

2. The fuel cell 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.

Assignees

• Sumitomo Electric Industries

Inventors

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

Classifications

• Y02E60/50

  Fuel cells · CPC title

• B22F3/1103

  with particular physical characteristics · CPC title

• H01M2008/1293

  Fuel cells with solid oxide electrolytes · CPC title

• H01M8/12

  operating at high temperature, e.g. with stabilised ZrO2 electrolyte · CPC title

• H01M8/0247

  characterised by the form (characterised by a channel configuration H01M8/0258) · CPC title