caa a22 4500 606173269 CHVBK 20210128100732.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s11244-014-0345-x doi (NATIONALLICENCE)springer-10.1007/s11244-014-0345-x Integration of Anodic and Cathodic Catalysts of Earth-Abundant Materials for Efficient, Scalable CO2 Reduction [Elektronische Daten] [Rishi Parajuli, James Gerken, Kunttal Keyshar, Ian Sullivan, Narayanappa Sivasankar, Kyle Teamey, Shannon Stahl, Emily Cole] A fully integrated electrochemical cell for co-production of formate (HCOO−) and oxygen (O2) from carbon dioxide (CO2) and water using only earth-abundant elements has been developed. The process converts CO2 to formate using electrons derived from anodic water oxidation. A novel cathodic catalyst system, consisting of a tin (Sn) cathode in combination with the soluble heterocycle 2-picoline, was identified for CO2 reduction. Water oxidation takes place at a fluorine-doped tin oxide electrode coated with an electrodeposited cobalt oxide (CoOx) electrocatalyst. Use of 2-picoline as a soluble cathodic co-catalyst lowered the overpotential and enhanced the stability of the Sn-mediated CO2 reduction process. Fluorophosphate served as a redox-stable electrolyte to buffer the anode compartment at mildly acidic pH (~5 to 5.5), thereby stabilizing the CoOx electrocatalyst and supporting efficient water oxidation. The complete electrochemical cell maintained a stable cell voltage of less than 3V over 5days, with an average formate faradaic yield of 34%. These results are presented together with an economical analysis of large-scale solar-driven production of formate/formic acid from CO2 and water. Springer Science+Business Media New York, 2014 Water oxidation nationallicence CO2 electroreduction nationallicence Electrocatalyst nationallicence Formic acid nationallicence Cobalt oxide nationallicence Tin nationallicence Parajuli Rishi Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut Gerken James Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, 53706, Madison, WI, USA aut Keyshar Kunttal Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut Sullivan Ian Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut Sivasankar Narayanappa Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut Teamey Kyle Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut Stahl Shannon Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, 53706, Madison, WI, USA aut Cole Emily Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/1(2015-02-01), 57-66 1022-5528 58:1<57 2015 58 11244 https://doi.org/10.1007/s11244-014-0345-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-014-0345-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Parajuli Rishi Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut NATIONALLICENCE 700 1- Gerken James Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, 53706, Madison, WI, USA aut NATIONALLICENCE 700 1- Keyshar Kunttal Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut NATIONALLICENCE 700 1- Sullivan Ian Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut NATIONALLICENCE 700 1- Sivasankar Narayanappa Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut NATIONALLICENCE 700 1- Teamey Kyle Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut NATIONALLICENCE 700 1- Stahl Shannon Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, 53706, Madison, WI, USA aut NATIONALLICENCE 700 1- Cole Emily Liquid Light, Inc., 11 Deer Park Dr., Suite 121, 08852, Monmouth Junction, NJ, USA aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/1(2015-02-01), 57-66 1022-5528 58:1<57 2015 58 11244