A WO₃-CuCrO₂ Tandem Photoelectrochemical Cell for Green Hydrogen Production under Simulated Sunlight.

ABSTRACT: The development of photoelectrochemical tandem cells for water splitting with electrodes entirely based on metal oxides is hindered by the scarcity of stable p-type oxides and the poor stability of oxides in strongly alkaline and, particularly, strongly acidic electrolytes. As a novelty in the context of transition metal oxide photoelectrochemistry, a bias-free tandem cell driven by simulated sunlight and based on a CuCrO₂ photocathode and a WO₃ photoanode, both unprotected and free of co-catalysts, is demonstrated to split water while working with strongly acidic electrolytes. Importantly, the Faradaic efficiency for H₂ evolution for the CuCrO₂ electrode is found to be about 90%, among the highest for oxide photoelectrodes in the absence of co-c

SUBMITTER: Diaz-Garcia AK 

PROVIDER: S-EPMC11434413 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature