Photoelectrochemical tandem cell of Se/BiVO4 photoanode and Cr2O3/CuO:Ni photocathode in aqueous medium

• Published in: Journal of sol-gel science and technology 2020, Vol.93 (1), p.1-5
• Main Authors: Mohd Nasir, Siti Nur Farhana, Mat-Teridi, Mohd Asri
• Format: Article
• Language: English
• Subjects: Aqueous solutions; Bias; Bismuth oxides; Brief Communication: Sol–gel and hybrid materials for catalytic; Ceramics; Chemistry and Materials Science; Chromium oxides; Composites; Electrodes; Glass; Inorganic Chemistry; Materials Science; Nanotechnology; Natural Materials; Optical and Electronic Materials; Photoanodes; Photocathodes; Photoelectric effect; Photoelectric emission; photoelectrochemical and sensor applications; Vanadates; Water splitting
• ISSN: 0928-0707; 1573-4846
• DOI: 10.1007/s10971-019-05179-w

Tandem cell consisting of n-type (n-Se/BiVO 4 ) photoanode and p-type (p-Cr 2 O 3 /CuO:Ni) photocathode for solar water splitting have been fabricated and studied photoelectrochemically. The photocurrent of n-Se/BiVO 4 vs. p-Cr 2 O 3 /CuO:Ni observed in a two-electrode system in an aqueous medium is 0.03 mA cm −2 at zero bias. By scrutinizing the intersection point of each photocurrent in the 3-electrode system, the solar-to-hydrogen efficiency (STH) of 0.05% corresponding to 0.04 mA cm −2 is achieved under AM 1.5 G illumination. Highlights Tandem cell consisting of Se/BiVO 4 photoanode and Cr 2 O 3 /CuO:Ni photocathode has been fabricated. The individual photocurrent of n-Se/BiVO 4 vs. p-Cr 2 O 3 /CuO:Ni was 0.03 mA cm −2 at zero bias. The solar-to-hydrogen efficiency of 0.05% corresponding to 0.04 mA cm −2 recorded for the tandem cell.