![]() ![]() An earth-abundant catalyst-based seawater photoelectrolysis system with 17.9% solar-to-hydrogen efficiency. Single-crystal nitrogen-rich two-dimensional Mo 5N 6 nanosheets for efficient and stable seawater splitting. Stable and highly efficient hydrogen evolution from seawater enabled by an unsaturated nickel surface nitride. ![]() “Superaerophobic” nickel phosphide nanoarray catalyst for efficient hydrogen evolution at ultrahigh current densities. Heterogeneous bimetallic phosphide Ni 2P-Fe 2P as an efficient bifunctional catalyst for water/seawater splitting. Highly efficient hydrogen evolution from seawater by a low-cost and stable electrocatalyst superior to Pt/C. Chlorine-free alkaline seawater electrolysis for hydrogen production. Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels. Non-noble metal-nitride based electrocatalysts for high-performance alkaline seawater electrolysis. Charge state manipulation of cobalt selenide catalyst for overall seawater electrolysis. Combining theory and experiment in electrocatalysis: insights into materials design. Energy-saving hydrogen production by chlorine-free hybrid seawater splitting coupling hydrazine degradation. Electrolysis of low-grade and saline surface water. Photoelectrochemical cells for solar hydrogen production: current state of promising photoelectrodes, methods to improve their properties, and outlook. Direct electrolytic splitting of seawater: opportunities and challenges. Our work is a substantial step forwards in producing green hydrogen and achieving a sustainable energy future.ĭresp, S., Dionigi, F., Klingenhof, M. A photovoltaic-electrolysis device with the electrocatalyst as both an oxygen and a hydrogen evolution catalyst delivers a record solar-to-hydrogen efficiency of 18.1% for overall seawater splitting, along with good stability over 200 h under a high working current over 440 mA. Introduction of carbonate ions into its interlayers and surface anchoring of graphene quantum dots block unfavourable adsorption of chloride ions and contribute to increased resistance of the electrocatalyst to chloride ion corrosion. Here we report an earth-abundant layered double hydroxide electrocatalyst that sustains stable electrolysis of seawater over 2,800 h under an ultra-high current density of ∼1.25 A cm −2. However, because of the complex ion environment, direct electrolytic splitting of seawater faces major challenges, notably chlorine evolution, corrosion of electrodes and other side reactions. ![]() A promising pathway to mass production of hydrogen is electrolysis of seawater-an unlimited water source-using renewable energy. Hydrogen has long been seen as a key energy vector for a carbon-neutral and sustainable future. ![]()
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