(677h) Surface Behaviors of Electrodeposited Tin Oxide on Selected Substrates and Their Effectiveness in CO2 Electro-Reduction

Authors: 
McCaskill, A., Florida Institute of Technology
Christou, N., Florida Institute of Technology
Mbah, J., Florida Institute of Technology
Carbon dioxide (CO2) effects on greener energy remain the topic of discussion in the need to direct new ways to sustainability. Electro-sequestration of CO2 is being pursued as a promising route leading to many studies in this area. Findings have shown the effectiveness of electrocatalytic conversion of CO2 to useful chemicals. However, high over-potentials to produce efficient current densities, coupled with a vast range of faradaic efficiencies, and issues on stability and longevity have been the major drawbacks. Post transition metal oxides have shown promise to CO2 reduction, among which tin oxide (SnO2) is the most cost effective and least toxic. But the reported range of current density, and faradaic efficiency using a SnO2 catalyst is sporadic. In this work, the reduction of CO2 is investigated by focusing on electrode materials, specifically, on surface behaviors of the anode structures. Since SnO2 has shown great potential for CO2 reduction, our aim is to investigate this material further. Thus, the objective is to study the cathodic electrodeposition characteristics of some notable substrates- glassy carbon, indium tin oxide, tin, and their alloys- as they interact with SnO2 catalyst. The result of our study and the effectiveness of these materials to reduce CO2 will be presented.