Cell plate structure for fuel cell, manufacturing method thereof and solid electrolyte type fuel cell

A method of manufacturing a cell plate structure for a fuel cell, the method comprising:

• preparing a porous substrate;
• forming a gas impermeable layer on the porous substrate;
• forming a lower electrode layer on the porous substrate at an area where the gas impermeable layer is absent;
• forming a solid electrolyte layer to have a plurality of divided electrolyte regions;
• and
• forming an upper electrode layer in opposed relation to the lower electrode layer such that the solid electrolyte layer has a layer element interposed between the lower electrode layer and the upper electrode layer,
• wherein the gas impermeable layer covers an area where the solid electrolyte layer is absent on the porous substrate,
• and wherein the gas impermeable layer separates gas passing inside the porous substrate and gas passing outside the porous substrate.

A method of manufacturing a cell plate structure for a fuel cell, the method comprising:

• preparing a porous substrate;
• forming a lower electrode layer on the porous substrate;
• forming a gas impermeable layer on the porous substrate at an area where the lower electrode is absent;
• forming a solid electrolyte layer to have a plurality of divided electrolyte regions;
• and
• forming an upper electrode layer in opposed relation to the lower electrode layer such that the solid electrolyte layer has a layer element interposed between the lower electrode layer and the upper electrode layer,
• wherein the gas impermeable layer covers an area where the solid electrolyte layer is absent on the lower electrode layer, and
• wherein the gas impermeable layer separates gas passing inside the porous substrate and gas passing outside the porous substrate.

A method for manufacturing a cell plate structure for a fuel cell, the method comprising:

• preparing a porous substrate;
• forming a gas impermeable layer on the porous substrate;
• preparing a temporary substrate;
• forming a solid electrolyte layer on the temporary substrate to have a plurality of divided electrolyte regions;
• laminating the porous substrate, which is formed with the gas impermeable layer, and the solid electrolyte layer, which is formed on the temporary substrate, with respect to one another via a lower electrode layer having an adhesive function such that the lower electrode layer is placed on the porous substrate at an area where the gas impermeable layer is absent;
• removing the temporary substrate from the solid electrolyte layer after the porous substrate and the solid electrolyte layer formed on the temporary substrate are laminated to each other via the lower electrode layer;
• and
• forming an upper electrode layer in opposed relation to the lower electrode layer such that the solid electrolyte layer has a layer element interposed between the lower electrode layer and the upper electrode layer,
• wherein the gas impermeable layer covers an area where the solid electrolyte layer is absent on the porous substrate,
• and wherein the gas impermeable layer separates gas passing inside the porous substrate and gas passing outside the porous substrate.

A solid electrolyte type fuel cell, comprising:

• a cell plate structure for a fuel cell;
• and
• a support member supporting the cell plate structure for the fuel cell,
• wherein the cell plate structure for the fuel cell has:
• a porous substrate;
• a lower electrode layer formed on the porous substrate;
• an upper electrode layer opposed to the lower electrode layer;
• a solid electrolyte layer having a layer element placed between the lower electrode layer and the upper electrode layer and composed of a plurality of divided electrolyte regions;
• and
• a gas impermeable layer correspondingly covering an area where the solid electrolyte layer is absent on the porous substrate or on the lower electrode layer such that the gas impermeable layer separates gas passing inside the porous substrate and gas passing outside the porous substrate,
• and wherein a plurality of cell plate structures, each of which corresponds to the cell plate structure, are laminated with the support member.

A cell plate structure for a fuel cell, comprising:

• a porous substrate;
• a lower electrode layer formed on the porous substrate;
• an upper electrode layer opposed to the lower electrode layer;
• a solid electrolyte layer having a layer element placed between the lower electrode layer and the upper electrode layer and composed of a plurality of divided electrolyte regions;
• and
• separating means for separating gas passing inside the porous substrate and gas passing outside the porous substrate, the separating means correspondingly covering an area where the solid electrolyte layer is absent on the porous substrate or on the lower electrode layer.