Two-dimensional dual-mesoporous catalytic networks with coexisting Pt single atoms and clusters for boosted oxygen reduction reaction

/2D-OMCNs exhibit excellent ORR activity and long-term durability in both three-electrode systems and practical fuel cell tests. This work presents a scalable design strategy for constructing high-performance, low-Pt ORR catalysts, and broadens the application scope of atom-cluster coexisting systems in fuel cell electrocatalysis.