Polymer electrolyte fuel cell and separator for polymer electrolyte fuel cell

A separator on the fuel feed side for a polymer electrolyte fuel cell in which a methanol aqueous solution is directly used as fuel, said separator comprising:

• a plate member with a plurality of through holes each arranged perpendicular to a surface thereof, configured to feed fuel to the side of an electrolyte of the fuel cell, and
• a cover portion covering one surface of said plate member, wherein fuel feed grooves and grooves connecting the through holes are formed on the surface of said plate member contacting said cover portion so that said through holes, said fuel feed grooves and said grooves connecting the through holes respectively form fuel feed passages between the contacting plate member and cover portion.

A separator on the fuel feed side for a polymer electrolyte fuel cell in which a methanol aqueous solution is directly used as fuel, said separator comprising:

• a plate member including a plurality of through holes each arranged perpendicular to a surface thereof configured to feed fuel to the side of an electrolyte of the fuel cell, and
• a cover portion covering one surface of said plate member, wherein fuel feed grooves and grooves connecting the through holes are formed on a surface of said cover portion contacting said plate member so that said through holes of said plate member, and said fuel feed grooves and said grooves connecting the through holes of said cover portion respectively form fuel feed passages between the contacting plate-like plate member and cover portion.

A polymer electrolyte fuel cell in which a methanol aqueous solution is directly used as fuel, said polymer electrolyte fuel cell comprising:

• a separator used in the polymer electrolyte fuel cell including a plate member with a plurality of through holes each arranged perpendicular to a surface thereof configured to feed fuel to the side of an electrolyte of the fuel cell, said plate member formed, on its surface where fuel is fed, with fuel feed grooves and grooves connecting the through holes, so that the fuel is fed via the through holes of said separator.

A polymer electrolyte fuel cell in which a methanol aqueous solution is directly used as fuel, said polymer electrolyte fuel cell comprising:

• a separator used in the polymer electrolyte fuel cell including a plate member with a plurality of through holes each arranged perpendicular to a surface thereof configured to feed fuel to the side of an electrolyte of the fuel cell, and a cover portion covering one surface of said plate member, wherein fuel feed grooves and grooves connecting the through holes are formed on the surface of said plate member contacting said cover portion so that said through holes, said fuel feed grooves and said grooves connecting the through holes respectively form fuel feed passages between the contacting plate member and cover portion, so that the fuel is fed via the through holes of said separator.

A polymer electrolyte fuel cell in which a methanol aqueous solution is directly used as fuel, said polymer electrolyte fuel cell comprising:

• a separator used in the the polymer electrolyte fuel cell including a plate member with a plurality of through holes each arranged perpendicular to a surface thereof configured to feed fuel to the side of an electrolyte of the fuel cell, and a cover portion covering one surface of said plate member, wherein fuel feed grooves and grooves connecting the through holes are formed on a surface of said cover portion contacting said plate member so that said through holes of said plate member, and said fuel feed grooves and said grooves connecting the through holes of said cover portion respectively form fuel feed passages between the contacting plate member and cover portion, so that the fuel is fed via the through holes of said separator.