Pd Nanoparticle-Interspersed Hierarchical Copper Hydroxide@NickelCobalt Hydroxide Carbonate Tubular Arrays as Efficient Electrocatalystsfor Oxygen Evolution Reaction

To meet the ever growing of clean energy technology, developing effective catalysts for oxygen evolution reaction (OER) is imperative for boosting the efficiency of electrochemical water splitting. This work reports Pd nanoparticles-interspersed nickel cobalt hydroxide carbonate nanothorns coated copper hydroxide nanotube arrays which grown on copper foam (CH@NCHC NT-Pd/CF) as highly efficient OER electrocatalytic electrode. The nanothorns and open-structured nanotubes and nanothorns have large surface area and plenty active sites. Particularly, the interfacial interaction between Pd nanoparticles and NCHC nanothorns causes charge transfer and redistribution, which are highly beneficial to promote OER. The unique 3D integrated construction also can accelerate the electron and mass transfer and improve structural stability. Owing to the above merits, CH@NCHC NT-Pd/CF shows excellent OER electrocatalytic activity and stability in alkaline solution, delivering current density of 100 mA cm-2 at low overpotent...