CELL STRUCTURE FOR FUEL CELL AND FUEL CELL SYSTEM

[Problem] To provide a cell structure for a fuel cell which can be quickly activated while protecting a sealing member disposed between an electric power generation cell assembly and a separator. [Solution] A cell structure for a solid oxide fuel cell stack (100) includes metal support cell assemblies (101), a separator (102), sealing members (an anode outer edge sealing member (104A) and a cathode outer edge sealing member (104C)), and a heat exchange part (191). Each sealing member is disposed between an edge of the corresponding metal support cell assembly (101) and an edge of the separator (102), and retains a gas out of a cathode gas (CG) and an anode gas (AG) to be supplied to power generation cells (101M) between the corresponding power generation cell assembly (101) and the separator (102). The heat exchange part (191) is disposed adjacent to the sealing members, and performs temperature control of the sealing members by using one of the gases or typically the cathode gas (CG) to be supplied to the power generation cells (101M).