Solid oxide electrolyte fuel cell plate structure, stack and electrical power generation unit

A solid electrolyte fuel cell stack, comprising:

• a solid electrolyte fuel cell plate structure;
• and
• a porous base body disposed adjacent to the solid electrolyte fuel cell plate structure,
• wherein the solid electrolyte fuel cell plate structure includes:
• a cell element layer having an air electrode layer, a fuel electrode layer and a solid electrolyte layer which is sandwiched between the air electrode layer and the fuel electrode layer;
• a porous base body supporting the cell element layer, the cell element layer being formed on the porous base body such that the air electrode layer or the fuel electrode layer is formed on the porous base body to be joined thereto;
• and
• a gas-impermeable member having an electrical conductivity and associated with the solid electrolyte layer to allow gas flowing through the porous base body to be separate from gas flowing outside the porous base body,
• and wherein a plurality of the solid electrolyte fuel cell plate structures are stacked via the porous base body, adjacent to the fuel cell plate structures, in a direction in which the cell element layers are laminated.

A solid electrolyte fuel cell stack, comprising:

• a solid electrolyte fuel cell plate structure having:
• a cell element layer having an air electrode layer, a fuel electrode layer and a solid electrolyte layer which is sandwiched between the air electrode layer and the fuel electrode layer;
• a porous base body supporting the cell element layer, the cell element layer being formed on the porous base body such that the air electrode layer or the fuel electrode layer is formed on the porous base body to be joined thereto, and the porous base body having a surface, opposed to another surface on which the cell element layer is laminated, which is formed with recessed portions;
• and
• a gas-impermeable member having an electrical conductivity and associated with the solid electrolyte layer to allow gas flowing through the porous base body to be separate from gas flowing outside the porous base body,
• wherein a plurality of the solid electrolyte fuel cell plate structures are stacked in a direction in which the cell element layers are laminated.

A solid electrolyte fuel cell electric power generation unit, comprising:

• a solid electrolyte fuel cell stack having a solid electrolyte fuel cell plate structure and a porous base body located adjacent to the solid electrolyte fuel cell stack having a solid electrolyte fuel cell plate structure;
• and
• a housing receiving the solid electrolyte fuel cell,
• wherein the solid electrolyte fuel cell plate structure includes:
• a cell element layer having an air electrode layer, a fuel electrode layer and a solid electrolyte layer which is sandwiched between the air electrode layer and the fuel electrode layer;
• a porous base body supporting the cell element layer, the cell element layer being formed on the porous base body such that the air electrode layer or the fuel electrode layer is formed on the porous base body to be joined thereto;
• and
• a gas-impermeable member having an electrical conductivity and associated with the solid electrolyte layer to allow gas flowing through the porous base body to be separate from gas flowing outside the porous base body,
• wherein a plurality of the solid electrolyte fuel cell plate structures are stacked via the porous base bodies, adjacent to the fuel cell plate structures, in a direction in which the cell element layers are laminated,
• and wherein pipe members are located to interconnect the porous base body of the solid electrolyte fuel cell plate structure to outside of the housing.

A solid electrolyte fuel cell electric power generation unit, comprising:

• a solid electrolyte fuel cell stack having a solid electrolyte fuel cell plate structure;
• and
• a housing receiving the solid electrolyte fuel cell stack;
• wherein the solid electrolyte fuel cell plate structure includes:
• a cell element layer having an air electrode layer, a fuel electrode layer and a solid electrolyte layer which is sandwiched between the air electrode layer and the fuel electrode layer;
• a porous base body supporting the cell element layer, the cell element layer being formed on the porous base body such that the air electrode layer or the fuel electrode layer is formed on the porous base body to be joined thereto, and the porous base body having a surface, opposed to another surface on which the cell element layer is laminated, which is formed with recessed portions;
• and
• a gas-impermeable member having an electrical conductivity and associated with the solid electrolyte layer to allow gas flowing through the porous base body to be separate from gas flowing outside the porous base body,
• wherein a plurality of the solid electrolyte fuel cell plate structures are stacked in a direction in which the cell element layers are laminated,
• and wherein pipe members are located to interconnect the porous base body of the solid electrolyte fuel cell plate structure to outside of the housing.

A solid electrolyte fuel cell plate structure, comprising:

• a cell element layer having an air electrode layer, a fuel electrode layer and a solid electrolyte layer which is sandwiched between the air electrode layer and the fuel electrode layer;
• support means for supporting the cell element layer so as to allow gas to pass through the support means, the cell element layer being formed on the support means such that the air electrode layer or the fuel electrode layer is formed on the support means to be joined thereto;
• and
• gas-impermeable means for causing gas to be impermeable, the gas-impermeable means having an electrical conductivity;
• and
• wherein the gas-impermeable means is associated with the solid electrolyte layer to allow gas flowing through the support means to be separate from gas flowing outside the support means.

A method of manufacturing a solid electrolyte fuel cell plate structure, comprising:

• preparing a porous base body;
• forming a cell element layer on the porous base body such that the cell element layer has an air electrode layer, a fuel electrode layer and a solid electrolyte layer which is sandwiched between the air electrode layer and the fuel electrode layer to allow the air electrode layer or the fuel electrode layer to be joined to the porous base body;
• and
• forming a gas-impermeable member to be associated with the solid electrolyte layer to allow gas flowing through the porous base body to be separate from gas flowing outside the porous base body, the gas-impermeable member having an electrical conductivity.