CELL STACK DEVICE, MODULE, AND MODULE HOUSING DEVICE

A cell stack device according to the present disclosure includes: a cell stack comprising a plurality of cells; and a manifold configured to supply reaction gas to the plurality of cells, wherein each of the plurality of cells includes: an element part comprising: a fuel electrode layer that is located on the fuel electrode layer; a solid electrolyte layer that is located on the fuel electrode layer; a middle layer that is located on the solid electrolyte layer; and an air electrode layer that is located on the middle layer, the middle layer including: a first middle layer bonded to the solid electrolyte layer; and a second middle layer bonded to the air electrode layer; and a non-element part of the cell that comprises the entire cell excluding the air electrode layer, the non-element part located at least at a first of both ends of the plurality of cells in a longitudinal direction, and the plurality of cells is fixed to the manifold at least at the first end by a sealing material located between the manifold and either the solid electrolyte layer or the first middle layer.