Addressing solar photochemistry durability with an amorphous nickel antimonate photoanode

Renewable generation of fuels using solar energy is a promising technology whose deployment hinges on the discovery materials with combination durability and solar-to-chemical conversion efficiency that has yet to be demonstrated. Stable operation photoanodes been demonstrated wide-gap semiconductors, as well protected visible gap semiconductors. Visible photoresponse from electrochemically stable quite rare. In this paper, we report high-throughput an amorphous Ni-Sb (1:1) oxide photoanode meets requirements operational stability, photoresponse, appreciable photovoltage. X-ray absorption characterization Ni Sb establishes structural connection rutile NiSb 2 O 6 , guiding electronic structure via photoelectron experiments density functional theory. This opens avenues for photoelectrode development due lack crystal anisotropy combined its which mitigates formation interphase disrupts semiconductor-electrolyte junction. • High-throughput enable Favorable Pourbaix energetics surface provide excellent The broad spectral response stands in contrast end members 5 NiO Electronic chemical pave way future study Harvesting sustainably synthesize requires identification can operate durably many years. Inspired by corrosion resistance oxides, Zhou et al. nickel antimonate light photoactivity lower than analogous materials, paving pathway further development.