Nanocatalyst Fuel Cell Electrode Simulator

Platinum is the single most expensive component of a hydrogen fuel cell, so catalyst designers spend it as thin films of nanoparticles rather than solid foil — every atom on a particle's surface can catalyse the oxygen-reduction reaction (ORR), while every atom buried inside contributes nothing. This simulator renders a patch of catalyst-loaded carbon support in 3D and lets you resize the platinum nanoparticles, change how much platinum mass is spread across the electrode, and drive the cathode with an overpotential, watching the specific surface area, roughness factor and resulting ORR current density respond exactly as the geometry and Tafel kinetics dictate.