Stability and self-passivation of copper vanadate photoanodes under chemical, electrochemical, and photoelectrochemical operation

Lan Zhou; Qimin Yan; Jie Yu; Ryan J. R. Jones; Natalie Becerra-Stasiewicz; Santosh K. Suram; Aniketa Shinde; Dan Guevarra; Jeffrey B. Neaton; Kristin A. Persson; John M. Gregoire

doi:10.1039/C6CP00473C

Stability and self-passivation of copper vanadate photoanodes under chemical, electrochemical, and photoelectrochemical operation†

Lan Zhou,^a Qimin Yan,^bc Jie Yu,^bde Ryan J. R. Jones,^a Natalie Becerra-Stasiewicz,^a Santosh K. Suram,^a Aniketa Shinde,^a Dan Guevarra,^a Jeffrey B. Neaton,^bcf Kristin A. Persson*^e and John M. Gregoire*^a

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* Corresponding authors

^a Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, CA 91125, USA
E-mail: gregoire@caltech.edu

^b Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

^c Department of Physics, University of California, Berkeley, CA 94720, USA

^d Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

^e Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
E-mail: kapersson@lbl.gov

^f Kavli Energy NanoSciences Institute, Berkeley, CA 94720, USA

Abstract

Deployment of solar fuels technology requires photoanodes with long term stability, which can be accomplished using light absorbers that self-passivate under operational conditions. Several copper vanadates have been recently reported as promising photoanode materials, and their stability and self-passivation is demonstrated through a combination of Pourbaix calculations and combinatorial experimentation.

Physical Chemistry Chemical Physics

Stability and self-passivation of copper vanadate photoanodes under chemical, electrochemical, and photoelectrochemical operation†

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Stability and self-passivation of copper vanadate photoanodes under chemical, electrochemical, and photoelectrochemical operation

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