Siming Li¹, Michael A. Lloyd², Hannes Hempel³, Charles J. Hages³, José Márquez³, Andrew A. Golembeski⁴, Thomas Unold³, Rainer Eichberger⁵, Brian E. McCandless² and Jason B. Baxter¹, (1)Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, (2)Institute of Energy Conversion, University of Delaware, Newark, DE, (3)Dept. of Structure and Dynamics of Energy Materials, Helmholtz-Zentrum Berlin, Berlin, Germany, (4)Department of Chemical Engineering, University of Rochester, Rochester, NY, (5)Institute for Solar Fuels, Helmholtz-Zentrum Berlin, Berlin, Germany