Flow path structure manufacturing method, power generation cell manufacturing method, flow path structure intermediate

摘要

PROBLEM TO BE SOLVED: To form a reaction gas flow path easily and efficiently at low cost. A flow path forming body 44 of a fuel cell 16 has a main body portion 50 joined to a gas diffusion layer 42, and a flow path groove 52 in which a reaction gas flow path 58 is formed inside. The main body portion 50 has a plurality of divided portions 56 by being divided by the flow path groove 52. At least the portion of the separator 32 facing the flow path forming body 44 is flat. The manufacturing method of the flow path structure 10 which is a joint body of the flow path forming body 44 and the gas diffusion layer 42 is a connecting portion for connecting the flow path groove 52, the dividing portion 56, and a plurality of dividing portions 56 to the conductive member 48. The step of forming the split portion connecting body 74 by forming the split portion connecting body 72 to obtain the split portion connecting body 74, the joining step of joining the divided portion connecting body 74 and the conductive porous body 46 to obtain the intermediate body 92, and the intermediate body 92. It has a trimming step of removing the connecting portion 72 of the above. [Selection diagram] FIG. 7