Formation of Cu nanostructured electrode surfaces by an annealing-electroreduction procedure to achieve high-efficiency CO2 electroreduction

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DOIResolve DOI: http://doi.org/10.1016/j.elecom.2013.10.023
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TypeArticle
Journal titleElectrochemistry Communications
ISSN1388-2481
Volume38
Pages811; # of pages: 4
SubjectCu electrode; Electro reduction; Electrode surface area; Faradaic efficiencies; High-temperature annealing; Hybrid nanofiber; Nano-structured electrodes; Nanostructured electrode surfaces; Electrocatalysts; Electrolytic reduction; Nanofibers; Carbon dioxide
AbstractAn 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 cm2 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. © 2013 Elsevier B.V.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment (EME-EME)
Peer reviewedYes
NPARC number21270815
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Record identifierde1a0219-3d64-4e5c-b7e0-258297b654d7
Record created2014-02-17
Record modified2016-05-09
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