METAL CATALYST CARRIER MANUFACTURING METHOD, METAL CATALYST CARRIER, FUEL CELL MANUFACTURING METHOD, CATALYST-CARRYING DEVICE

摘要

Provided is a technology capable of limiting the occurrence of variation in metal catalyst particle diameter when the metal catalyst is loaded on a carrier. A CNT substrate (10), on which carbon nanotube (11) (CNT (11)) carriers are arranged, is disposed inside a processing chamber (101). Carbon dioxide is supplied to the processing chamber (101). After putting the carbon dioxide in the processing chamber (101) in a supercritical state, a complex solution in which a platinum complex is solubilized is supplied to the processing chamber (101). The sample temperature (TS), which is the temperature of the CNT (11), is raised above the ambient temperature (TF) inside the processing chamber (101). The CNT substrate (10) is heated so that the temperature difference (&Dgr;T) between the ambient temperature (TF) and the sample temperature (TS) repeatedly decreases and increases. After releasing the supercritical state of the supercritical fluid, the CNT substrate (10) is heated and the metal catalyst is deposited on the CNT surface.