Publication: Effect of aqueous media on photoelectrochemical water splitting performance of �-Fe2O3/LaFeO3:Cr tandem cell
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Date
2024
Authors
Aadenan A.
Arzaee N.A.
Rahman N.A.A.
Noh M.F.M.
Daud M.N.M.
Mohamed N.A.
Mustapha M.
Ibrahim M.A.
Ludin N.A.
Teridi M.A.M.
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Nature
Abstract
A tandem cell that consists of an n-type (�-Fe2O3/hematite) photoanode and a p-type (LFO:Cr/chromium-doped lanthanum iron oxide) photocathode for solar water splitting has been demonstrated and studied for its photoelectrochemically. Under two-electrode system configurations, the PEC performance of �-Fe2O3 exhibited a good photoanodic response with the highest photocurrent density achieved was 0.0047�mA and 0.066�mA�cm?2 at 1.23�V (vs. LFO and LFO:Cr), respectively, as operated in 0.1�M KOH (pH 13) electrolyte. Furthermore, the tandem of (LFO and LFO:Cr) vs. �-Fe2O3 also presented a similar increase of photocurrent responses as operated in different aqueous media. At zero bias condition, the highest photocurrent constructed in a two-electrode system was 0.0022�mA�cm?2 for �-Fe2O3 vs. LFO:Cr, which increased by 0.0006�mA�cm?2 from �-Fe2O3 vs. LFO tandem cell in 0.1�M KOH electrolyte. As a result, the solar-to-hydrogen (STH) efficiency of 0.0026% was achieved under AM 1.5 G illumination. Graphical Abstract: (Figure presented.) ? The Author(s), under exclusive licence to The Materials Research Society 2023.
Description
Keywords
Chromium compounds , Electrodes , Electrolytes , Hematite , Photocurrents , Photoelectrochemical cells , Potassium hydroxide , Solar power generation , Aqueous media , Hematite photoanode , LaFeO3:cr , Performance , Photoelectrochemical water splitting , Photoelectrochemicals , Tandem cells , Two-electrode systems , Water splitting , ?-fe2O3 , Lanthanum compounds