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US 2021/0083301 A1Published application
Metal porous body, method of producing the same, and fuel cell
AssigneeSumitomo Electric Industries, Ltd.
InventorsChihiro HIRAIWA, Masatoshi MAJIMA, Takahiro HIGASHINO, Naho MIZUHARA, Hiromasa TAWARAYAMA
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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.
Claims6
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/cm3 to 10 g/cm3.
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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.
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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.
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