Electrode catalyst containing porous silicon nitroxycarbide composite material, fuel cell electrode, fuel cell, and method for producing said electrode catalyst

Abstract

The present invention provides an electrode catalyst, a fuel cell electrode, and a fuel cell containing a porous silicon nitroxycarbide composite material that has both a high BET specific surface area and high electrical conductivity, and a method for producing an electrode catalyst containing a porous silicon nitroxycarbide composite material in which the pore size can be controlled using an organic alkoxysilane of the type widely distributed as an industrial raw material. The electrode catalyst of the present invention comprises a porous silicon nitroxycarbide composite material containing silicon nitroxycarbide (SiCNO) and a carbon material, and particles containing a noble metal supported on the porous silicon nitroxycarbide composite material. The porous silicon nitroxycarbide composite material has a BET specific surface area of ​​100 m 2 / g or more 400m 2 / g or less, and the electrical conductivity is 1.0 S / cm or more and 25 S / cm or less.