Recent progress in the development of tin tungstate (α-SnWO₄) photoanodes for solar water oxidation

Abstract

Direct water splitting in a photoelectrochemical device is a promising approach to store solar energy in the form of green hydrogen. However, its implementation has been hindered by a classic...

Conformal coating of superhydrophilic nickel iron phytic acid complex to boost BiVO4 photoanode solar water oxidation

“…1,2 However, the four-electron transfer process of the oxygen evolution reaction (OER) encounters sluggish kinetics, which poses a bottleneck that hinders the overall efficiency, necessitating the development of high-performance photoanode materials. 3 Among various photoanodes, monoclinic BiVO 4 is distinguished as a prospective photoanode due to its suitable band structure, high carrier mobility (∼4 × 10 −2 cm 2 V −1 s −1 ), high theoretical photocurrent density (7.5 mA cm −2 ), and solar-to-hydrogen efficiency (∼9.2%). 4,5 Nevertheless, the practical performance of BiVO 4 photoanodes is significantly hampered by inadequate surface charge separation and sluggish OER kinetics.…”