S1 Supporting Information Photoactive Zn-Air-Batteries Using Spinel-Type Cobalt Oxide as a Bifunctional Photocatalyst at the Air Cathode Chanikarn Tomon a , Sangchai Sarawutanukul a , Salatan Duangdangchote a , Atiweena Krittayavathananon a , and Montree Sawangphruk a, * a Centre of Excellence for Energy Storage Technology (CEST), Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand. E-mail: montree.s@vistec.ac.th * Corresponding author: montree.s@vistec.ac.th Section 1: Experimental Section 2: Cobalt Hydroxide Carbonate (Co(OH)(CO 3 ) 0.5 ) Section 3: Supporting Figures and Tables Section 4: Calculations of interlayer spacing, Band gap energy, oxidation number, and specific capacity obtained from XRD, UV-Visible spectroscopy, XAS, and electrochemical results, respectively Electronic Supplementary Material (ESI) for ChemComm. This journal is © The Royal Society of Chemistry 2019