A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation

Single Pt atom catalysts are key targets because a high exposure of substantially enhances electrocatalytic activity. In addition, PtRu alloy nanoparticles the most active for methanol oxidation reaction. To combine exceptional activity single with an Ru support we must overcome synthetic challenge forming atoms on noble metal nanoparticles. Here demonstrate process that grows and spreads islands branched to create single-Pt-atom-on-Ru catalysts. By following spreading by in situ TEM, found formation stable structure is thermodynamically driven strong Pt–Ru bonds lowering surface energy islands. The stability its resilience CO poisoning result current density mass reaction over time. state-of-the-art electrooxidation—the anodic direct fuel cells. Now, method dispersing presented monitored situ, thereby boosting catalytic performance