Fuel Cell Electrode Catalyst Surface Metal Exposure

The patent utilizes porous carbon carriers with controlled pore structures to support active metal particles. The porous structure allows reactants to access active metal sites while maintaining high surface area for catalyst loading. By optimizing pore size and distribution, the patent maximizes both catalyst loading amount and active metal utilization efficiency, resolving the contradiction between quantity and productivity.

The patent applies local quality by creating non-uniform distributions of active metal particles on the carrier surface, concentrating active components in regions with optimal reactant access. This ensures that supported active metal particles are positioned where they can effectively participate in electrochemical reactions, improving utilization efficiency while maintaining high loading amounts.

The patent changes physical parameters such as active metal particle size, distribution density, and carrier pore structure to maximize catalytic activity per unit mass of precious metal. By optimizing these parameters, the patent achieves high catalyst activity with reduced precious metal content, resolving the contradiction between productivity and quantity of substance.

The patent employs composite material structures combining active metal particles with conductive carbon carriers and polymer electrolytes. This composite approach enhances catalyst activity through synergistic effects, allowing reduced precious metal loading while maintaining or improving overall catalytic performance, thus resolving the cost-activity contradiction.