Boosting the Solar Water-Splitting Performance of a CuO Photocathode via Synergetic Interfacial Hole Extraction and Surface Electron Collection
P-type cupric oxide (CuO) is a promising photocathode material for solar hydrogen production, whereas its practical application is severely limited by constrained photoelectrochemical (PEC) performance and poor photostability. Herein, an integrated NiO/CuO/CuS photocathode has been developed, in which an ultrathin Ni...