초록 ▼

Electrocatalyst and hydrophobic polymer particles are combined to form an aqueous suspension which is then applied to a conductive substrate to form an electrode. The colloidal chemistry of the suspension of electrocatalyst particles and hydrophobic polymer particles is controlled prior to the appli

Electrocatalyst and hydrophobic polymer particles are combined to form an aqueous suspension which is then applied to a conductive substrate to form an electrode. The colloidal chemistry of the suspension of electrocatalyst particles and hydrophobic polymer particles is controlled prior to the application of the suspension to the substrate such as by the incorporation of a sol of a polyvalent metal oxide or solution of a salt of a polyvalent metal into the suspension.

대표청구항 ▼

The method of constructing a fuel cell electrode comprising the steps of: forming an aqueous suspension of electrocatalyst particles; adding a sol of a polyvalent metal oxide or solution of a salt of a polyvalent metal to said aqueous suspension, the valency of the metal of said sol or solution of s

The method of constructing a fuel cell electrode comprising the steps of: forming an aqueous suspension of electrocatalyst particles; adding a sol of a polyvalent metal oxide or solution of a salt of a polyvalent metal to said aqueous suspension, the valency of the metal of said sol or solution of said salt being 3 or greater, and the concentration of the metal oxide in the sol or the concentration of the metal cation in the salt solution is on the order of 10-2 to 10-7 M; forming a separate aqueous suspension of colloidal hydrophobic polymer particles; combining said aqueous suspensions forming a uniform aqueous suspension of electrocatalyst particles and hydrophobic polymer particles; and fabricating said electrocatalyst particles and polymer particles into a fuel cell electrode.