Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 38, Issue -, Pages 8-11Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2013.10.023
Keywords
Carbon dioxide; Electrocatalyst; Electroreduction; Cu electrode; Hybrid nanofibers
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Funding
- National Natural Science Foundation of China [21173039, 41073060]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20110075110001, 20100075110010]
- Innovation Program of the Shanghai Municipal Education Commission [14ZZ074]
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An effective fibrous Cu electrode surface, created using a procedure combining high-temperature annealing and electroreduction, is explored for CO2 reduction to produce useful fuels. The nanostructure of this Cu electrode surface contains a layer of nanofibers or nanofibers surrounded by kernels with 30-100 nm diameters. With a specific surface area as high as 458 cm(2) per geometric electrode surface area, this nanostructured electrode is found to have a high activity toward CO2 reduction, indicated by its more positive reduction potentials and higher catalytic current density than a smooth Cu electrode. The Faradaic efficiency for HCOO- production is 43%, and the electrode surface remains stable during 19 h of electrolysis - better results than with smooth Cu under identical conditions. (C) 2013 Elsevier B.V. All rights reserved.
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