All First Row Transition Metal Oxide Photoanode for Water Splitting Based on Cu3V2O8

作者：Seabold Jason A; Neale Nathan R^*

来源：Chemistry of Materials, 2015, 27(3): 1005-1013.

DOI：10.1021/cm504327f

Identification of viable photoanode candidates for use in a tandem photoelectrochemical water splitting system remains a significant challenge to the realization of efficient solar-driven hydrogen production. Herein, copper vanadate (Cu3V2O8) is introduced as a new, all first row transition metal oxide with a band gap of near 2 eV that makes it suitable as a photoanode candidate in such a solar water splitting system. In this work, many of the key physical and photoelectrochemical properties of Cu3V2O8 are established including band gap, doping type, ability to extrinsically dope, flat-band potential, band positions, electron diffusion length, chemical stability, and O-2 evolution faradaic efficiency. This study provides a key initial step in identifying the features that can lead to a complete understanding of this new ternary metal oxide and motivate discovery of related photoanodes comprised of multicomponent oxides.

• 出版日期2015-2-10