| 摘要 |
PROBLEM TO BE SOLVED: To reduce the highest temperature in a cell, uniformize the temperature distribution, and improve the battery service life by arranging a first arrangement group whose projected area is the largest in the gas flow direction on the outlet side of fuel gas, and arranging a second arrangement group whose projected area becomes the smallest on the inlet side of the fuel gas. SOLUTION: Support materials 13 having projections 12 are arranged in fuel gas passages 9 and 10, and the projections 12 have a length in the same degree with a passage height 1.8mm, and contact with electrodes 4 and 5, and prevent a current collecting action and deformation of the electrodes and deformation of the gas passages 9 and 10. The support materials 13 are arranged in the anode side passage 9 so that side surfaces 14 of the support materials 13 face a gas flow. That is, they are arranged so that the projected area of the support materials 13 becomes the largest when viewed from the gas flow. The gas flow is disturbed by the side surface parts 14 of the support materials 13, and mixing of hydrogen of a reaction component, water of a generating component and CO2 is improved, and the hydrogen concentration on an electrode surface is improved. Next, on the cathode side, the side surface parts 14 of the support materials 13 are arranged so as to become parallel to the gas flow. A second passage constituting body is arranged in an inlet of fuel gas 7, and a first passage constituting body is arranged on the outlet side. Its area rate is 3:7. |
