| 摘要 |
A fuel cell stack including an array of a plurality of fuel cells in which power generation efficiency can be increased by uniformizing temperature distribution in a direction of arrangement of fuel cells, is provided. In a fuel cell stack including an array of a plurality of fuel cells electrically connected in series to each other, the fuel cells each being formed by laminating a fuel-side electrode layer, a solid-state electrolytic layer, and an air-side electrode layer one after another on a support substrate, an interval between a plurality of the fuel cells arranged in a midportion thereof in a direction of arrangement of the fuel cells is wider than an interval between a plurality of the fuel cells arranged at either end thereof in the direction of arrangement of the fuel cells. The temperature distribution of the fuel cell stack can be made as nearly uniform as possible.
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