| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal structure that has excellent gas sealing properties, and to provide a fuel cell stack structure.SOLUTION: A seal structure is disposed between two separators that sandwich therebetween a unit cell in a fuel cell stack structure. The seal structure includes: a flow passage member that is disposed on a first separator side; a flow passage member that is disposed on a second separator side; and a seal member that is disposed between the two flow passage members. In the seal structure, at least one of the flow passage members is a welded member that is welded with a weld bead formed in at least one recess formed in at least one of two or more members. A fuel cell stack structure includes the seal structure. |
