Graphite-protected CsPbBr₃ perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water.

ABSTRACT: Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr₃-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr₃ as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm^-2 at 1.23 V_RHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation cata

SUBMITTER: Poli I 

PROVIDER: S-EPMC6506520 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature