To prevent leak of gas due to crack of an adhesive material at an adhesion/joint part accompanying deformation of constituent components of a cell unit, and enable to superbly carry out current collection.

For the sake of generating power, two kinds of gas are separately made in flowing contact with two reaction electrodes of a solid electrolyte type cell 20, a cell housing part 30 housing the solid electrolyte type cell 20 and an inner-unit collector 60 in pressure-contact with each other, and formed in rigidity free from deformation due to the pressure-contact force, and a gas feeding and exhausting body D0 for feeding and exhausting one kind of gas to and from the solid electrolyte type cell 20 in the cell housing part 30 are provided. The gas feeding and exhausting body D0 is formed in lower rigidity than the cell housing part 30, and that, the gas feeding and exhausting body D0 and the cell housing part 30 are gas-tightly jointed to each other.