Multi-atom Catalysts for Oxygen Evolution Reaction

The development of effective, low-cost, as well as stable electrocatalysts for water splitting to utilize hydrogen fuels is a serious issue. A potential technique which includes mixing diverse materials to create a synergistic impact, which has shown to be a distinctive and appealing concept. The oxygen evolution reaction (OER) plays an important role in numerous electrochemical devices in the context of electrochemical water splitting; however, it has sluggish kinetics. Multi-atom catalysts have various benefits, such as high intrinsic electrocatalytic activity, maximal atomic efficiency, diversified chemical characteristics, and positive atom-to-atom synergy. As a result, multi-atom catalysts (MACs) have received a lot of interest as enhanced electrocatalysts for OER. This chapter presents an in-depth overview of the most recent developments in MACs for OER electrocatalysis. The inherent benefits of MACs are fully examined first, with a focus on three hypothesized processes that emphasize the electrical structure of active sites. The structural activity using experimental results has been thoroughly investigated, which provide a framework for rational structural design. In addition, the current synthesis techniques and a thorough performance comparison are described. Finally, many avenues for enhanced MACs development for OER electrocatalysis are presented.