Solar driven water splitting utilizing Seawater As a New Electrolyte and n-Type KFeO3 Photoelectrode

Abstract

Despite its elevated photocatalytic activity, KFeO₃ photoanode has rarely been used for water- splitting applications. In order to explore the application of KFeO₃, n-type KFeO₃ photoanode nano-perovskite is produced using sol-gel method and the corresponding thin film is formed by dip-coating followed by calcinations as verified by the characterization of material and morphology. The photoactivity is further analyzing by applying this material for photoelectrochemical water splitting. In order to determine the efficacy of the water splitting system based on KFeO₃, the photocurrent, electrochemical impedance spectroscopy range, Mott-Schottky plot and current-voltage response are examined. The result of using seawater as a new and cheap natural electrolyte shows extreme photocatalytic activity. This study demonstrates new horizons regarding the development of the fuel cell produced by seawater-based hydrogen along with the application of promising materials such as KFeO₃.