Current collecting material for fuel electrode, solid oxide fuel cell unit cell and solid oxide fuel cell

摘要

PPROBLEM TO BE SOLVED: To provide a current collecting material for a fuel electrode capable of restraining cracks of unit cells without greatly damaging power generation performance, and a solid oxide fuel battery unit cell using this, as well as a solid oxide fuel battery. PSOLUTION: The current collecting material for a fuel electrode contains nickel-based powder made of one or more kinds selected from nickel powder, nickel alloy powder and nickel oxide powder, and material powder not to be adhered with a separator at battery power generation temperature, and has a ratio of volume % of the nickel-based powder to the material powder (volume % of nickel-based powder/volume % of material powder) of 85/15 or more. Preferably, a particle diameter of the material powder is larger than that of the nickel powder. As the material powder, stabilized zirconia powder, ceria system solid solution powder, aluminum powder, lanthanum gallate system composite oxide powder, or the like, can be suitably used. PCOPYRIGHT: (C)2008,JPO&INPIT