Facile aqueous route towards tunable Cu-based photocathodes for renewable hydrogen production

Abstract

The ability to harness and conserve solar energy, the cleanest and most abundant energy available, is of utmost importance to guarantee a continuous supply to satisfy our energy demands. Artificial photosynthesis is a promising technology to store the captured solar energy into energy-dense chemicals, e.g. hydrogen.[1] Such a solar-energy-to-chemical-energy conversion could be achieved at high efficiency through the use of photo-electrochemical devices using semiconducting photocathodes and/or photoanodes.