| 摘要 |
PURPOSE:To provide high efficiency and reliability by improving the degree of power generation efficiency drop due to the improper seal of fuel and oxygen gases, and the degree of thermal strain due to a crossing type cell module in the conventional structure of a flat type solid electrolyte fuel cell. CONSTITUTION:An oxygen electrode 1 is made of a bottomed rectangular parallelopiped having many holes, and the film of a solid electrolyte 2 as a film resistant against gas permeation is formed on one side of the parellelopiped. The other side thereof is covered with the film of an interconnector 4 as a film against gas permeation as well, thereby forming a single cell 5. With the application of this construction, a mixing process is prevented from taking place between oxygen gas supplied to the inside of the electrode 1, and fuel gas supplied to the outside of the bottomed parellelopiped, without any sealing treatment. A drop in power generation efficiency is thereby prevented. Also, oxygen gas feed tubes 7 are inserted in the upper opening sections 6 of the holes, and an identical flow direction is maintained for oxygen gas on the electrode 1 and fuel gas on a fuel electrode 3 formed on the solid electrolyte 2. As a result, thermal strain distribution over a cell power generation section is made uniform and thermal strain is restrained, thereby improving the reliability of a battery. |
