CATALYST SLURRY FOR THE CONTINUOUS MANUFACTURING PROCESS OF MEMBRANE ELECTRODE ASSEMBLY IN POLYMER ELECTROLYTE FUEL CELL, AND MANUFACTURING METHOD FOR THE SAME

摘要

A catalyst slurry with a high viscosity suitably used in a process of continuously manufacturing a membrane electrode assembly of a polymer electrolyte fuel cell is provided, and a method for manufacturing the catalyst slurry is provided to produce a large quantity of membrane electrode assemblies with the same quality within a short time. A method for manufacturing a catalyst slurry used in continuous manufacturing of a membrane electrode assembly of a polymer electrolyte fuel cell comprises the steps of: pouring distilled water into which a dispersant and an anti-foaming agent are dissolved into catalyst particles; adding an organic solvent comprising a binder into the distilled water comprising the catalyst particles; primarily stirring the catalyst slurry; secondly stirring the primarily stirred catalyst slurry; defoaming the secondly stirred catalyst slurry, and thirdly stirring the defoamed catalyst slurry, wherein the first stirring step is performed in a ultrasonic cleaner containing water for 5 to 30 minutes, the second stirring step is performed at a rotation speed of 6 to 15 revolutions per minute within a defoaming machine for 12 to 24 hours, and the third stirring step is performed at a rotation speed of 6 revolutions per minute for 24 to 72 hours after releasing the vacuum state. Further, a viscosity of the catalyst slurry is 8000 to 12000 cP.