Dual-Atom Catalysts for Oxygen Evolution Reaction

Oxygen evolution reaction (OER) is a chemical reaction in the process of generating molecular oxygen in the oxidation of water during oxygenic photosynthesis, electrolysis of water into oxygen and hydrogen, and electrocatalytic oxygen evolution from oxides and oxoacids. Noble metal oxides such as ruthenium and iridium oxides have good electrocatalytic activity for the OER process, but they have disadvantages such as high cost, inaccessibility, limited reserves, and durability. Therefore, the design and preparation of a low-cost, highly active, and high stable performance catalyst is necessary. In this regard, dual-atom catalysts (DACs) are a suitable option according to their characterization such as good electrocatalytic activity, high atomic efficiency, and synergic effects. Their atomically dispersed active sites lead to maximum utilization efficiency of the metal sites. This chapter presents an outlook on the design, catalytic mechanism, and application of dual-atom catalysts in oxygen evolution reactions.