Design of advanced aerogel structures for oxygen reduction reaction electrocatalysis

Abstract Oxygen reduction reaction (ORR) is considered the bottleneck in fuel cells. Its sluggish kinetics requires use of scarce and expensive platinum group metal (PGM) catalysts. Significant efforts have been invested trying to find a PGM‐free catalyst replace Pt for this or reduce its loadings. One interesting family materials that has shown great promise doing so aerogels, which are based on covalent frameworks. The aerogels’ high surface area porosity enable good mass transport utilization expected lower PGM loadings replacing them completely. This review summarizes recent research field, introducing methods using aerogels as cathodes ORR, from carbon aerogels. catalytic sites vary nanoparticles atomically dispersed ions embedded form all‐in‐one platform can serve both support catalyst.