Abstract: An embodiment fuel cell heat treatment method includes preparing a fuel cell stack by stacking a plurality of unit cells, each unit cell including a membrane electrode assembly, and performing a heat treatment on an entirety of the fuel cell stack at a preset target temperature in a heat treatment chamber. An embodiment fuel cell heat treatment apparatus includes a heat treatment chamber configured to perform a heat treatment on an entirety of a fuel cell stack at a preset target temperature in the heat treatment chamber, the fuel cell stack including a plurality of unit cells stacked on each other, each unit cell including a membrane electrode assembly.

Abstract: A cell frame for a fuel cell includes a flat part provided in a reaction gas inlet and outlet port; an expansion groove provided at a location between a reaction gas hole and the reaction zone by a portion of the flat part being depressed downward; and a raised part provided by protruding upward from an inner bottom surface of the expansion groove, and configured to extend in a flow direction of reaction gas.

Abstract: Disclosed herein is a gasket for a fuel cell, which is coupled to surfaces of a pair of separators disposed above and below an MEA. The gasket for a fuel cell includes a first gasket coupled to the surface of one of the separators while one surface of the first gasket comes into contact therewith, the other surface of the first gasket being an irregular surface, and a second gasket coupled to the surface of the other of the separators.