| 摘要 |
PURPOSE:To reduce current collecting resistance, simplify structure, and reduce cost by performing the improvement by inclining a support tube, a fuel electrode and a part of a current collecting lead. CONSTITUTION:When cells 20a and 20b are put in a high temperature atmosphere of 1000 deg.C when a fuel cell 1 is actuated, current collecting parts 13, fuel electrodes 11 and insulating parts 12 different in materials of a fuel electrode tube 10 are heated. In joining places of the current collecting parts 13 of nickel and the insulating parts 12 of zirconia, though thermal expansions are different from each other, the same kind joining as a part of inclined parts 14a between both is performed. Thereby, the joining sides of both cause the same thermal expansion as a part of the inclined parts 14a, and do not separate from each other due to thermal fitting. The inclined parts 14a and 14e on both left and right ends abundantly contain metallic nickel in a current collecting part side boundary. Since left and right current collecting parts 13 are metallic nickel and are comparatively thickly formed as a constitutive element of the fuel electrode tube 10, resistance is very small. Since a voltage loss becomes very small by the inclined parts 14a and 14b and the current collecting parts 13, an electric current can be efficiently collected. |
