A fuel cell stack includes power generation cells, terminal plates, first cooling
cells, and second cooling cells. The terminal plates are electrically connected
to the power generation cells. The first cooling cells are interposed between the
terminal plates, and a cooling liquid is supplied to the first cooling cells for
cooling the power generation cells. The second cooling cells are interposed between
the terminal plates. A predetermined number of power generation cells are interposed
between the first cooling cell and the second cooling cell. A cooling air is supplied
to the second cooling cell for cooing the power generation cells.