| 简介 |
PROBLEM TO BE SOLVED : To improve sinterability at low temperatures and to enhance the stability of materials in a reducing atmosphere. SOLUTION : This fuel cell has an air electrode 1 formed on one side of a solid electrolyte 2 and a fuel electrode 3 on the other and has a current collector 4 electrically connected to the air electrode 1. The current collector 4 is composed chiefly of perovskite type complex oxides containing at least La and Cr and contains at least one kind selected from the group consisting of Y and rare earth elements and Ca, each by 0.1 to 8.0 wt.% in terms of oxides, and a low-concentration area 9 wherein the concentrations of at least one kind selected from the group consisting of Y and the rear earth elements and Ca are both not more than 0.05 wt.% in terms of oxides is present on the side end of the free surface 8 of the current collector 4 which is not connected to the air electrode 1. |
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