Solid electrolyte fuel cell and method for manufacture of same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsNoboru Taniguchi, Junji Niikura, Kazuhito Hatoh, Takaharu Gamo
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Abstract
This invention provides a solid electrolyte fuel cell operable with high efficiency even in the temperature range of about 850.degree. to 650.degree. C., The invention is characterized by the use of a novel perovskite double oxide of the composition A.sub.X B.sub.Y O.sub.3-.alpha.. The fabrication of the electrolyte, air electrode and fuel electrode layers by tape casting has contributed to marked improvement in processability and productivity.
Claims3
A method of manufacturing a solid electrolyte fuel cell, comprising the steps of:
- forming a solid electrolyte layer by tape casting;
- sintering said layer;
- forming an air electrode layer for a positive electrode on one side of said solid electrolyte layer by tape casting;
- forming a fuel electrode layer for a negative electrode on the other side of said solid electrolyte layer by tape casting;
- and
- simultaneously sintering said positive and negative electrodes.
A method of manufacturing a solid electrolyte fuel cell comprising sequentially:
- forming, on a carrier sheet, one of;
- an air electrode layer for a positive electrode, or
- a fuel electrode layer for a negative electrode by tape casting;
- forming an electrolyte layer by tape casting;
- forming another of;
- an air electrode layer for a positive electrode, or
- a fuel electrode layer for a negative electrode,
- by tape casting, to form a single unit;
- removing said electrode-electrolyte-electrode unit from said carrier sheet;
- sintering said unit to provide an integral cell element sheet;
- and
- assembling a fuel cell using said sheet.
A method of manufacturing a solid electrolyte fuel cell comprising sequentially:
- forming, on a carrier sheet, one of;
- an air electrode layer for a positive electrode, or
- a fuel electrode layer for a negative electrode by tape casting;
- forming an electrolyte layer by tape casting;
- forming another of;
- an air electrode layer for a positive electrode, or
- a fuel electrode layer for a negative electrode,
- by tape casting, to form a single unit;
- removing said electrode-electrolyte-electrode unit from said carrier sheet, to provide an integral cell element sheet;
- assembling a fuel cell using said sheet;
- and
- sintering said layers as a unit while said positive electrode and negative electrode are supplied with air and fuel gas, respectively.
Dependencies are inferred from the claim text.