Fuel Cell Catalyst Synthesis With Potential Cycling for Durable Activity

The patent applies parameter changes by controlling the particle size of metal nanoparticles to be 0.5 nm or less (subnanometer scale) and adjusting the metal content ratio between 0.1-10 wt%. By changing these physical parameters and using potential cycle treatment to control particle formation, the patent achieves both high catalytic activity from small particle size and improved durability by preventing Ostwald growth through controlled potential cycles during synthesis

The patent employs preliminary action by performing potential cycle treatment during the catalyst synthesis process itself, before the catalyst is deployed in fuel cells. This preliminary potential cycling pre-stabilizes the nanoparticle structure and surface properties, creating a more durable catalyst that resists further degradation during actual power generation reactions

The patent replaces mechanical synthesis methods with an electrochemical approach using potential cycle treatment. Instead of relying on mechanical mixing or chemical reduction methods that are difficult to scale, the patent uses electrical potential cycling in an electrochemical cell to control nanoparticle formation, enabling industrial-scale production while maintaining small particle size and high specific surface area

The patent applies universality by using a multi-functional electrochemical synthesis method that can produce metal nanoparticles of controlled size (0.5 nm or less) with high specific surface area while simultaneously being scalable for industrial production. The same electrochemical potential cycle process achieves both precise particle size control and large-scale manufacturing capability