Nickel Quantum Dots Anchored in Biomass‐Derived Nitrogen‐Doped Carbon as Bifunctional Electrocatalysts for Overall Water Splitting

Abstract Quantum dots (QD), mixed with carbon materials, have gained increasing interest in the last few years as electrocatalysts due to their outstanding properties, such excellent catalytic activity and good thermodynamic stabilities. However, most QD‐carbon hybrids show lower activities than that theoretically predicted aggregation of nanostructures during processing. Herein, biomass is used a source prepare QD (Ni@CN) address aforementioned issue. The cells walls membranes materials are usually rich sites could regulate deposition growth Ni from salt precursor by simple solution impregnation method. Due abundance seeding sits limited supply + , particles size restricted level 3–4 nm. formed compounds strongly linked membranes, which be maintained after subsequent heat treatment. prepared 3D architecture has high activity, large surface area, strong physical integration, rapid charge transfer capability, collectively enhances performance toward oxygen evolution reaction hydrogen reaction, opening door empower next‐generation green fuel conversion for neutral.