文摘
T. Asefa, X. Zou, and co-workers present a nickel foam-supported, ultrathin nanosheet-based, hollow Ni3S2-based electrocatalyst for overall water splitting on page 4839. By using this material as electrocatalyst both at the cathode and the anode sides of an electrolyzer, a water-splitting efficiency is achieved that outperforms even noble-metal-based Pt/C and IrOx/C benchmark electrolyzers. This result represents an important step toward efficient, non-noble metal electrocatalyst-based overall water splitting.