Researchers report an anode for electrolysis of seawater to hydrogen and oxygen, consisting of a layer of nickel sulfide on the surface of nickel foam, coated with a nickel-iron hydroxide catalyst, which exhibited catalytic activity and resistance to chloride corrosion over 1,000 hours of operation at current densities up to 1 A/cm2; such an electrode could be used in conjunction with solar cells to convert solar energy into hydrogen and oxygen without the need for desalination, according to the authors.
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Article #19-00556: "Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels," by Yun Kuang et al.
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Proceedings of the National Academy of Sciences