Abstract
A novel hierarchical vanadium-doped Cu2S nanowall arrays assembled by nanowires (V-Cu2S-Nanowires NW) on copper foam is synthesized by a facile one-step solvothermal method. Interestingly, the nanoparticles furtherly constitute the smallest unit of nanowires. Owing to the unique hierarchical structure with offering plentiful electronics/ions transport pathways and fully exposing catalytic active sites as well as optimizing hydrogen adsorption free energy due to vanadium doped effect, the V-Cu2S-Nanowires NW demonstrates enhanced electrocatalytic activity towards hydrogen evolution reaction (HER) with a low loverpotential of 188 mV to drive 10 mA cm−2 and good durability for at least 20 h. This work provides an effective strategy for rational design of nanostructured Cu-based materials and enhanced energy-efficient hydrogen production.
Published Version
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