Method for producing porous graphitized carbon material covered with supported catalyst and metal nanoparticles

摘要

In the case of a known production method of porous graphitized carbon material covered with metal nanoparticles for electrochemical applications, a porous template skeleton made of an inorganic template material is replaced with a carbon precursor. Impregnate. After the heat treatment of the carbon precursor, the template skeleton is removed. The resulting particulate porous carbon material is then covered with a substance that catalyzes. On the premise of this, in order to keep the ratio of noble metal loading at the low level necessary for commercial products, in the case of the present invention, the heat treatment of the carbon precursor includes carbonization for the time being, and the particulate porous carbon material Is graphitized only after removal of the template skeleton to form a graphitized particulate porous carbon material. In this case, the graphitized carbon material exhibits a hierarchical pore structure exhibiting a pore volume of at least 0.5 cm 3 / g, wherein at least 75% of the pore volume is in the size range of 100-5000 nm. This corresponds to the macro hole. Prior to covering with a catalytic substance, the carbon material is subjected to an activation treatment in an oxidizing atmosphere.