| 摘要 |
PROBLEM TO BE SOLVED: To provide a cantilever type stack structure in which occurrence of "gas leak" in a joint material is difficult.SOLUTION: In a stack structure, a fuel gas flow-in side end portion of each of plural fuel battery cells 100 aligned in a stack arrangement is inserted in an insertion hole 221 formed in the upper wall 220 of a manifold for supplying fuel gas, and joined/supported to the upper wall 220 by using a joint member 300. On the cross-section of the joint material 300, no second gas hole (the diameter ranges from 100 to 300 μm) exists, but first gas holes (the diameter ranges from 10 to 50 μm) exist in an area 320 which is located within a distance range of T or less from the surface of the joint material confronting the outside of the joint material, and the first gas holes and the second gas holes exist in the remaining area 310 of the joint material 300. When the area of the total area of the joint material is represented by S and the area of the area 320 of the joint material is represented by S2 on the cross-section, S2/S is equal to 75% or less, and T is equal to 0.1 mm or more.SELECTED DRAWING: Figure 9 |
