US 6,599,651 B1 · Separator of proton exchange fuel cell and its manufacturing method

Abstract

A method of manufacturing the separator of the proton exchange fuel cell. In a cell stack of a proton exchange fuel cell, the cell stack composed by laminating a plurality of unit cells and a plurality of separators, each of the unit cells composed of an anode electrode, a cathode electrode and a solid polymer electrolytic membrane arranged between the anode and cathode electrodes, each of the separators arranged between the unit cells, respectively, the method of manufacturing the separator of the proton exchange fuel cell, includes the steps of, preparing step for preparing raw material for the separator, the raw material composed of alloy material including light metal, such as aluminum or magnesium, as a main component, and forming step for forming the separator from the raw material by die casting.

Claims18

Dependent claims

A method of manufacturing a separator for a proton exchange fuel cell, comprising the steps of:

preparing an alloy selected from the group consisting of:
an alloy (in weight %):
Cu:
0.3-0.4%, Si:
12.0-12.2%, Mg:
0.08-0.11%, Mn:
0.23-0.24%, Fe:
0.64-0.74%, Zn:
0.09-0.10%, and Al:
the remainder;
an alloy (in weight %):
Cu:
1.9-2.5%, Si:
9.4-10.4%, Mg:
0.21-0.25%, Mn:
0.16-0.38%, Fe:
0.72-0.93%, Zn:
0.42-0.93%, Al:
the remainder;
an alloy (in weight %):
Cu:
0.01%, Si:
0.1%, Mn:
0.80%, Fe:
0.09%, Ni:
0.01%, Ti:
0.01% and Al:
the remainder;
an alloy (in weight %):
Mn:
1.4-4.3%, Fe:
0.5-1.0%, and Al:
the remainder;
an alloy (in weight %):
Cu:
0.05%, Co:
1.0% and Al:
the remainder;
and
an alloy (in weight %):
Mn:
2.0%, Zn:
3.0%, Fe:
1.0%, Mg:
0.5% and Al:
the remainder;
and
forming said separator from said alloy by die casting.

45 more elements

Dependencies are inferred from the claim text.

Separator of proton exchange fuel cell and its manufacturing method

Life of this patent

Separator of proton exchange fuel cell and its manufacturing method

Life of this patent

Abstract

Claims18