Polycrystalline and single crystal Cu electrodes: influence of experimental conditions on the electrochemical properties in alkaline media

Albert Kilian Engstfeld, Thomas Magaard, Sebastian Horch, Ib Chorkendorff, Ifan Erfyl Lester Stephens*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Single- and polycrystalline Cu electrodes serve as model systems for the study of the electroreduction of CO2, CO and nitrate, or for corrosion studies; even so, there are very few reports combining electrochemical measurements with structural characterization. Herein we investigate both the electrochemical properties of polycrystalline Cu and single crystal Cu(100) electrodes in alkaline solutions (0.1 M KOH and 0.1 M NaOH). We demonstrate that the pre-treatment of the electrodes plays a crucial role in the electrochemical properties of the electrodes. We perform scanning tunneling microscopy, X-ray photo electron spectroscopy and cyclic voltammetry on Cu(100) electrodes prepared under UHV conditions; we show that the electrochemical properties of these atomically well-defined electrodes are distinct from electrodes prepared by other methods. We also highlight the significant role of residual oxygen and electrolyte convection in influencing the electrochemical properties.
Original languageEnglish
JournalChemistry: A European Journal
Volume24
Issue number67
Pages (from-to)17743-17755
Number of pages13
ISSN0947-6539
DOIs
Publication statusPublished - 2018

Keywords

  • copper
  • cyclic voltammetry
  • ultra-high vacuum

Cite this

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title = "Polycrystalline and single crystal Cu electrodes: influence of experimental conditions on the electrochemical properties in alkaline media",
abstract = "Single- and polycrystalline Cu electrodes serve as model systems for the study of the electroreduction of CO2, CO and nitrate, or for corrosion studies; even so, there are very few reports combining electrochemical measurements with structural characterization. Herein we investigate both the electrochemical properties of polycrystalline Cu and single crystal Cu(100) electrodes in alkaline solutions (0.1 M KOH and 0.1 M NaOH). We demonstrate that the pre-treatment of the electrodes plays a crucial role in the electrochemical properties of the electrodes. We perform scanning tunneling microscopy, X-ray photo electron spectroscopy and cyclic voltammetry on Cu(100) electrodes prepared under UHV conditions; we show that the electrochemical properties of these atomically well-defined electrodes are distinct from electrodes prepared by other methods. We also highlight the significant role of residual oxygen and electrolyte convection in influencing the electrochemical properties.",
keywords = "copper, cyclic voltammetry, ultra-high vacuum",
author = "Engstfeld, {Albert Kilian} and Thomas Magaard and Sebastian Horch and Ib Chorkendorff and Stephens, {Ifan Erfyl Lester}",
year = "2018",
doi = "10.1002/chem.201803418",
language = "English",
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pages = "17743--17755",
journal = "Chemistry: A European Journal",
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publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",
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}

Polycrystalline and single crystal Cu electrodes: influence of experimental conditions on the electrochemical properties in alkaline media. / Engstfeld, Albert Kilian; Magaard, Thomas; Horch, Sebastian; Chorkendorff, Ib; Stephens, Ifan Erfyl Lester.

In: Chemistry: A European Journal, Vol. 24, No. 67, 2018, p. 17743-17755.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Polycrystalline and single crystal Cu electrodes: influence of experimental conditions on the electrochemical properties in alkaline media

AU - Engstfeld, Albert Kilian

AU - Magaard, Thomas

AU - Horch, Sebastian

AU - Chorkendorff, Ib

AU - Stephens, Ifan Erfyl Lester

PY - 2018

Y1 - 2018

N2 - Single- and polycrystalline Cu electrodes serve as model systems for the study of the electroreduction of CO2, CO and nitrate, or for corrosion studies; even so, there are very few reports combining electrochemical measurements with structural characterization. Herein we investigate both the electrochemical properties of polycrystalline Cu and single crystal Cu(100) electrodes in alkaline solutions (0.1 M KOH and 0.1 M NaOH). We demonstrate that the pre-treatment of the electrodes plays a crucial role in the electrochemical properties of the electrodes. We perform scanning tunneling microscopy, X-ray photo electron spectroscopy and cyclic voltammetry on Cu(100) electrodes prepared under UHV conditions; we show that the electrochemical properties of these atomically well-defined electrodes are distinct from electrodes prepared by other methods. We also highlight the significant role of residual oxygen and electrolyte convection in influencing the electrochemical properties.

AB - Single- and polycrystalline Cu electrodes serve as model systems for the study of the electroreduction of CO2, CO and nitrate, or for corrosion studies; even so, there are very few reports combining electrochemical measurements with structural characterization. Herein we investigate both the electrochemical properties of polycrystalline Cu and single crystal Cu(100) electrodes in alkaline solutions (0.1 M KOH and 0.1 M NaOH). We demonstrate that the pre-treatment of the electrodes plays a crucial role in the electrochemical properties of the electrodes. We perform scanning tunneling microscopy, X-ray photo electron spectroscopy and cyclic voltammetry on Cu(100) electrodes prepared under UHV conditions; we show that the electrochemical properties of these atomically well-defined electrodes are distinct from electrodes prepared by other methods. We also highlight the significant role of residual oxygen and electrolyte convection in influencing the electrochemical properties.

KW - copper

KW - cyclic voltammetry

KW - ultra-high vacuum

U2 - 10.1002/chem.201803418

DO - 10.1002/chem.201803418

M3 - Journal article

VL - 24

SP - 17743

EP - 17755

JO - Chemistry: A European Journal

JF - Chemistry: A European Journal

SN - 0947-6539

IS - 67

ER -