SOLID ELECTROLYTE FOR FLAT-PLATE SOLID OXIDE FUEL CELL, AND FLAT-PLATE SOLID OXIDE FUEL CELL

摘要

PPROBLEM TO BE SOLVED: To correct ununiformity of current density due to surface temperature distribution of a power generation cell and attain high efficiency. PSOLUTION: The flat-plate solid oxide fuel cell has a unit cell 10A constructed by forming a power generation cell 5A by arranging a fuel electrode layer 3 and an air electrode layer 4 on both sides of a solid electrolyte layer 2A, arranging a fuel electrode current collector 6 and an air electrode current collector 7 on the outside of this power generation cell, and arranging a separator 8A on the outside of these current collectors, and generates power generation reaction by forming reaction gas discharge holes 17, 18 for discharging a reaction gas on each face opposed to the fuel electrode layer and the air electrode layer and supplying the reaction gas to the fuel electrode layer and the air electrode layer through the current collectors from the gas discharge holes. The thickness of the solid electrolyte layer 2A is formed so that it becomes gradually thinner as it goes from the central part to the peripheral part of the face. PCOPYRIGHT: (C)2011,JPO&INPIT