Abstract
Photoelectrochemical (PEC) water splitting is an attractive and sustainable energy conversion method. In this work, cobalt phosphide (CoP) is photoelectrochemically deposited on a p-type cuprous oxide (p-Cu2O) photocathode for solar hydrogen production. Under visible light irradiation, the PEC assembly is active for hydrogen evolution, generating a current density of up to −5.3mAcm−2 and −4.2mAcm−2 in acidic and basic conditions at 0V vs. the reversible hydrogen electrode (RHE).
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