Patent ID: 9006128
Filing Date: 2015-04-14
Classification: B01J,H01M,Y02E,Y10S

Abstract:
1. A method for preparing a catalyst for a fuel cell electrode, the method comprising: heat-treating a linear crystalline carbon nanofibers of catalyst support at a temperature of 2,000 to 2,800° C. in an inert gas atmosphere to improve oxidation resistance due to an improvement in crystallinity of the carbon nanofibers; heat-treating a spherical crystalline acetylene black of catalyst support at a temperature of 1,000 to 1,500° C. in a high temperature steam atmosphere to increase the surface area of the acetylene black; dispersing the linear crystalline carbon nanofibers of catalyst support and the spherical crystalline acetylene black of catalyst support; mixing the linear crystalline carbon nanofibers of catalyst support and the spherical crystalline acetylene black of catalyst support in a predetermined mixing ratio to form a slurry; and preparing a platinum-supported catalyst or a platinum alloy-supported catalyst by adding NaOH, a platinum precursor or a platinum alloy precursor, and the mixture of the linear crystalline carbon nanofibers of catalyst support and the spherical crystalline acetylene black of catalyst support to a solvent for catalyst synthesis, and refluxing at a temperature of 140 to 180° C. to reduce the platinum precursor or the platinum alloy precursor, wherein the linear crystalline carbon nanofibers of catalyst support has a peak diameter of about 30 to 200 nm.