Multicomponent Electrocatalytic Systems for Solar Fuels Generators

High-functioning catalysts for photoelectrochemical solar fuels generators must operate as part of an integrated system including inorganic semiconductor light absorbers and, often, interfacial corrosion protection layers. These systems are far from idealized single crystals, indeed disorder or nanostructure can be found to be desirable. Correlation of structure, composition and interfacial characteristics with electrocatalytic properties presents an important challenge in achieving efficiency and stability. In this talk we will present an overview of our recent studies on water oxidation catalysts used for solar hydrogen generation systems both in- and ex-situ, and operando, and discuss key factors that affect their reactivity.