Oxygen electrosorption on copper single crystal electrodes in sodium hydroxide solution

Droog, John M.M.

doi:10.1016/0368-1874(80)80322-4

Cited by 7 publications

(13 citation statements)

References 3 publications

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“…The second possibility would be that the peak observed at 0.47 is caused by oxidation of surface sites by molecular O 2 . This is in agreement with the work by Droog et al., where the authors propose that the peak preceding the Cu 2 O formation at potentials <0.5 V is attributed to O 2 electrosorption . Thus the peak remains unchanged when O 2 is continuously supplied to the electrode under flow conditions, where under stagnant conditions the residual O 2 content in the cell is slowly reduced in subsequent potential cycles.…”

Section: Resultssupporting

confidence: 92%

“…−0.25 V up to ca. 0.5 V in alkaline . This potential region refers to the initial oxidation of Cu (total transfer of electrons per surface atom is less than or equal to one, for example, formation of an *OH adlayer).…”

Section: Resultsmentioning

confidence: 99%

“…The potentials are rescaled to the RHE scale for comparison. The CVs were extracted from the work by a) Droog and Schlenter, b) Jović and Jović from 2002 and 2003, c) Kunze et al., d) Schouten et al., e) Huang et al., and f) Le Duff et al …”

Section: Introductionmentioning

confidence: 99%

“…The abovementioned issues complicate the interpretation 1) of the CVs of polycrystalline Cu electrodes and 2) more importantly of electrocatalytic tests on Cu single crystals, in particular for CO and CO 2 reduction, where electrodes are typically electropolished. It is unclear whether disparities between single crystal studies are due to 1) different test methods employed, particularly in relation to product detection, or 2) the quality of the preparation method: studies on polycrystalline Cu show that the CO and CO 2 reduction activity are strongly dependent on the pre‐treatment…”

Section: Introductionmentioning

confidence: 99%

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Polycrystalline and Single‐Crystal Cu Electrodes: Influence of Experimental Conditions on the Electrochemical Properties in Alkaline Media

Engstfeld

Maagaard

Horch

et al. 2018

Chemistry A European J

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Single and polycrystalline Cu electrodes serve as model systems for the study of the electroreduction of CO , CO and nitrate, or for corrosion studies; even so, there are very few reports combining electrochemical measurements with structural characterization. Herein both the electrochemical properties of polycrystalline Cu and single crystal Cu(1 0 0) electrodes in alkaline solutions (0.1 m KOH and 0.1 m NaOH) are investigated. It is demonstrated that the pre-treatment of the electrodes plays a crucial role in determining their electrochemical properties. Scanning tunneling microscopy, X-ray photoelectron spectroscopy and cyclic voltammetry are performed on Cu(1 0 0) electrodes prepared under UHV conditions; it is shown that the electrochemical properties of these atomically well-defined electrodes are distinct from electrodes prepared by other methods. Also highlighted is the significant role of residual oxygen and electrolyte convection in influencing the electrochemical properties.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polycrystalline and Single‐Crystal Cu Electrodes: Influence of Experimental Conditions on the Electrochemical Properties in Alkaline Media

Engstfeld

Maagaard

Horch

et al. 2018

Chemistry A European J

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“…8d). Three peaks were identified to associate with the OHadsorption on Cu(100), Cu 110and Cu(111) 24 . Their ratios on bare Cu and Cu-1 were quantified by integrating the charges of each peak.…”

Section: Supplementary Note 2 | Influence Of the N-aryl-substituted Tmentioning

confidence: 99%

Molecular tuning of CO2-to-ethylene conversion

Thevenon

Rosas‐Hernández

et al. 2019

Nature

887

717

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Electrospun Cu‐Deposited Flexible Fibers as an Efficient Oxygen Evolution Reaction Electrocatalyst

2019

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Developing oxygen evolution reaction (OER) catalysts with high activity, long‐term durability, and at low cost remains a great challenge. Herein, we report the high activity of fibrous Cu‐based catalysts. The synthesis process is simple and scalable. Electrospinning method was selected to synthesize fibrous polymer substrates (Poly(vinylidene fluoride‐co‐hexafluoropropylene, PVdF‐HFP), which are then covered by Cu via electroless deposition. Cu‐deposited PVdF‐HFP with different microstructures having smooth and roughened surfaces were also synthesized by drop‐casting and impregnation method, respectively, to emphasize the importance of the microstructures on OER activity. The OER activity and durability were studied by linear sweep voltammetry, chronoamperometry, and Tafel slope analysis. The Cu/PVdF‐HFP fibrous catalysts exhibit significantly improved OER activity and durability compared with Cu plate as well as Cu‐deposited PVdF‐HFP with different microstructures. The unique fibrous structure provides better mass transport, diffusion, and large active surface area. In addition to the advantages of the fibrous structure, attenuated total reflection infrared (ATR‐IR) and ex situ X‐ray photoelectron spectroscopy revealed that the improved specific activity for Cu/PVdF‐HFP fiber can be attributed to the synergistic effect between Cu and Cu/PVdF‐HFP (electron transfer from Cu to PVdF‐HFP) at the Cu|PVdF‐HFP interface, which results in optimized reaction energetics for the OER.

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Oxygen electrosorption on copper single crystal electrodes in sodium hydroxide solution

Cited by 7 publications

References 3 publications

Polycrystalline and Single‐Crystal Cu Electrodes: Influence of Experimental Conditions on the Electrochemical Properties in Alkaline Media

Polycrystalline and Single‐Crystal Cu Electrodes: Influence of Experimental Conditions on the Electrochemical Properties in Alkaline Media

Molecular tuning of CO2-to-ethylene conversion

Electrospun Cu‐Deposited Flexible Fibers as an Efficient Oxygen Evolution Reaction Electrocatalyst

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