Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
Publication date: 18th July 2023
The quest for sustainable and clean energy sources has propelled extensive research into the development of efficient photoelectrochemical (PEC) systems for water splitting. Among the myriad of semiconductor materials scrutinized for photoanodes, bismuth vanadate (BiVO4) has emerged as a highly promising candidate, due to its favourable band structure, exceptional chemical stability, abundance in the Earth crust, moderate band gap energy (2.4 eV), and adequate band positions relative to the water redox potential. [1], [2], [3]
Scaling up the production of BiVO4 photoanodes, both in terms of size and while preserving laboratory-scale performance benchmarks,[4], [5] represents a key challenge toward the industrially viability of the water-splitting reaction. In this context, we present a novel method for the fabrication of BiVO4 photoanodes, extending to sizes of up to 5 cm2, through a streamlined Spray Pyrolysis deposition process. It is noteworthy that the exceptional performances showcased in this study were achieved through uniform illumination of the entire film, without any form of masking.
This study underscores the significance of BiVO4 in advancing the field of PEC water splitting, emphasizing the crucial role of scalable synthesis methods. These findings hold promise in bridging the gap between laboratory-scale performance and industrial applications, targeting a sustainable future driven by clean hydrogen production technologies.
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