METHOD FOR COATING CATALYST DIRECTLY ONTO CARBON CARRIER FOR FUEL CELL AND ELECTRODE FABRICATED BY THE METHOD

摘要

PURPOSE: A method of catalyst coating and an electrode fabricated by the method are provided to obtain excellent catalyst efficiency by coating catalyst onto a carbon carrier directly. CONSTITUTION: An electrolyte precipitation solution is prepared which includes a catalyst material to be coated as a component(step 11). A carbon carrier is prepared(step 12). The carbon carrier is oxidized by treating in a nitrate solution to stably coat the catalyst onto the carbon carrier(step 13). By applying pulse electric current to the electrolyte precipitation solution, the catalyst material is directly coated on the carbon carrier via electrolyte precipitation in a certain potential region(steps 14 and 15). The carbon carrier has a hydrophobicity to absorb hydrophobic particles only through microscopic pores without absorbing water. Then the carbon carrier is heat treated(step 16).