Hierarchical Cu pillar electrodes for electrochemical CO2 reduction to formic acid with low overpotential

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dc.contributor.authorChung, Jaehoonko
dc.contributor.authorWon, Da Hyeko
dc.contributor.authorKoh, Jaekangko
dc.contributor.authorKim, Eun-Heeko
dc.contributor.authorWoo, Seong-Ihlko
dc.date.accessioned2016-07-05T08:23:00Z-
dc.date.available2016-07-05T08:23:00Z-
dc.date.created2016-04-12-
dc.date.created2016-04-12-
dc.date.issued2016-02-
dc.identifier.citationPHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.18, no.8, pp.6252 - 6258-
dc.identifier.issn1463-9076-
dc.identifier.urihttp://hdl.handle.net/10203/209366-
dc.description.abstractTo achieve high performance of electrochemical CO2 reduction, a series of Cu pillar electrodes (Cu-2.5 h, Cu-5 h) were fabricated by using an electrodeposition method, and then their catalytic activities and reaction mechanisms were investigated. The series of Cu pillar electrodes exhibited improved electrocatalytic activities toward CO2 reduction to formic acid (HCOOH) as Cu pillars on electrodes developed. The Cu-5 h electrode performed well with a 28% Faradaic efficiency for formic acid at -0.5 V (vs. RHE). X-ray diffraction (XRD) analysis indicated that the enhanced catalytic activities were primarily attributable to the increased (111) facet, which is energetically favourable for the production of HCOOH. Also, ultraviolet photoelectron spectroscopy (UPS) and in situ electrochemical impedance spectroscopy (EIS) results suggested that the series of Cu pillar structure electrodes improved the electron transfer to adsorbed CO2 due to the decreased work function of the Cu pillar structure-
dc.languageEnglish-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleHierarchical Cu pillar electrodes for electrochemical CO2 reduction to formic acid with low overpotential-
dc.typeArticle-
dc.identifier.wosid000371953000062-
dc.identifier.scopusid2-s2.0-84958998974-
dc.type.rimsART-
dc.citation.volume18-
dc.citation.issue8-
dc.citation.beginningpage6252-
dc.citation.endingpage6258-
dc.citation.publicationnamePHYSICAL CHEMISTRY CHEMICAL PHYSICS-
dc.identifier.doi10.1039/c5cp07964k-
dc.contributor.localauthorWoo, Seong-Ihl-
dc.contributor.nonIdAuthorKim, Eun-Hee-
dc.subject.keywordPlusSINGLE-CRYSTAL ELECTRODES-
dc.subject.keywordPlusCARBON-DIOXIDE-
dc.subject.keywordPlusWORK FUNCTION-
dc.subject.keywordPlusCOPPER SURFACES-
dc.subject.keywordPlusELECTROREDUCTION-
dc.subject.keywordPlusHYDROCARBONS-
dc.subject.keywordPlusSIZE-
dc.subject.keywordPlusNANOPARTICLES-
dc.subject.keywordPlusSELECTIVITY-
dc.subject.keywordPlusCATALYSTS-
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