The electrocatalysts used in hydrogen fuel cell, fuel cell vehicle research, water electrolysis hydrogen production technology, alkali water hydrogen production, hydrogen production by proton exchange membrane (PEM) electrolysis are mainly platinum carbon black catalyst, platinum ruthenium carbon black catalyst, platinum black catalyst, platinum ruthenium black catalyst and iridium black catalyst with high content. The supported platinum catalyst uses a special active carbon black carrier. At present, there are many types of carbon black on the market, which are used in different industries and technical fields, and the catalyst carbon black carrier for fuel cell and electrolytic water hydrogen technology mainly consists of three diferent types: VXC72, VXC72R and BP2000.