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A Highly Selective Copper-Indium Bimetallic Electrocatalyst for the Electrochemical Reduction of Aqueous CO2 to CO.
- Source :
- Angewandte Chemie International Edition; Feb2015, Vol. 54 Issue 7, p2146-2150, 5p
- Publication Year :
- 2015
-
Abstract
- The challenge in the electrochemical reduction of aqueous carbon dioxide is in designing a highly selective, energy-efficient, and non-precious-metal electrocatalyst that minimizes the competitive reduction of proton to form hydrogen during aqueous CO<subscript>2</subscript> conversion. A non-noble metal electrocatalyst based on a copper-indium (Cu-In) alloy that selectively converts CO<subscript>2</subscript> to CO with a low overpotential is reported. The electrochemical deposition of In on rough Cu surfaces led to Cu-In alloy surfaces. DFT calculations showed that the In preferentially located on the edge sites rather than on the corner or flat sites and that the d-electron nature of Cu remained almost intact, but adsorption properties of neighboring Cu was perturbed by the presence of In. This preparation of non-noble metal alloy electrodes for the reduction of CO<subscript>2</subscript> provides guidelines for further improving electrocatalysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 54
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 100799470
- Full Text :
- https://doi.org/10.1002/anie.201410233