Elektrochemische Oberflächenphysik

Kolb, Dieter M.

doi:10.1002/1521-3757(20010401)113:7<1198::aid-ange1198>3.0.co;2-n

Cited by 41 publications

(11 citation statements)

References 137 publications

(87 reference statements)

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“…cation breakdown) triggers strong reductive currents. Figure 10.d reveals an entirely reconstructed surface, which was also observed and described in detail for Au(100) in aqueous electrolytes [34,35].…”

Section: In-situ Stm Studiesmentioning

confidence: 99%

The interface between Au(100) and 1-butyl-3-methyl-imidazolium-bis(trifluoromethylsulfonyl)imide

Müller

Vesztergom

Pajkossy

et al. 2015

Journal of Electroanalytical Chemistry

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The electrochemical interface of Au(100) and an ionic liquid, BMITf 2 N, has been characterized by cyclic voltammetry, electrochemical impedance spectroscopy and in-situ STM with the aim to compare this particular electrochemical system with the Au(100) | BMIPF 6 electrode. It is demonstrated that the two systems share the same electrochemical features: the capacitance spectra around the pztc show a double-arc structure on the complex plane, and the high frequency capacitance limits are practically the same in both systems. The double layer rearrangement processes are very slow; they proceed with time constants of minutes. Ordered adlayers of cations and anions have been imaged by in-situ STM.

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Section: In-situ Stm Studiesmentioning

confidence: 99%

The interface between Au(100) and 1-butyl-3-methyl-imidazolium-bis(trifluoromethylsulfonyl)imide

Müller

Vesztergom

Pajkossy

et al. 2015

Journal of Electroanalytical Chemistry

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“…The rapid development of in situ STM since 1990 has enabled investigations of electrode processes at electrode/electrolyte interfaces with unprecedented structural detail, and has thus played a vitally important role in advancing surface electrochemistry in aqueous solutions in the past two decades. [62,63] STM application in ionic liquids was initiated by Endres and Freyland et al in 1997, [64] for the investigation of Ag on highly oriented pyrolytic graphite (HOPG) in a chloroaluminate ionic liquid. In 2003, Mao and co-workers started to investigate the reconstruction and restructuring processes of Au single-crystalline electrode surfaces in a neat non-chloroaluminate alkylimidazolium-based ionic liquid.…”

Section: In Situ Characterizationmentioning

confidence: 99%

The Electrode/Ionic Liquid Interface: Electric Double Layer and Metal Electrodeposition

Wei

et al. 2010

ChemPhysChem

144

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The last decade has witnessed remarkable advances in interfacial electrochemistry in room‐temperature ionic liquids. Although the wide electrochemical window of ionic liquids is of primary concern in this new type of solvent for electrochemistry, the unusual bulk and interfacial properties brought about by the intrinsic strong interactions in the ionic liquid system also substantially influence the structure and processes at electrode/ionic liquid interfaces. Theoretical modeling and experimental characterizations have been indispensable in reaching a microscopic understanding of electrode/ionic liquid interfaces and in elucidating the physics behind new phenomena in ionic liquids. This Minireview describes the status of some aspects of interfacial electrochemistry in ionic liquids. Emphasis is placed on high‐resolution and molecular‐level characterization by scanning tunneling microscopy and vibrational spectroscopies of interfacial structures, and the initial stage of metal electrodeposition with application in surface nanostructuring.

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“…Control over electrochemical reactions, and thereby improvement of the stability of the substrate and the tip, was first accomplished by a four-electrode arrangement [95,115,196]. The potential adjustment of each working electrode (WE tip and WE sub ) was achieved by a separate potentiostat (bipotentiostat) with help of a reference electrode (RE) and a counter electrode (CE) [106,107]. Such an electrochemical cell under the control of a bipotentiostat was already introduced and illustrated in Chapter 2 1 .…”

Section: Setup Of the Ec-stmmentioning

confidence: 99%

Spin-polarized scanning tunneling microscopy at the solid/liquid interface

Majer

Schindler

2015

Surface Science

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The spin-polarized scanning tunneling microscopy (sp-STM) is demonstrated between a magnetized STM tip and a magnetic substrate at the solid/liquid interface under electrochemical conditions at room temperature. Thereby, sp-STM at the solid/liquid interface is accomplished using the differential magnetic mode established by Wulfhekel and Kirschner for investigations at the solid/vacuum interface. The implementation of the sp-STM setup into the electrochemical STM is an important part of this thesis. Special attention is paid to the magnetostriction effect of possible magnetic STM tips. As a model system extended Co islands are electrochemically grown on an Au(111) single crystal. An appropriate electrochemical environment is required to ensure metal Co islands on Au(111), since Co deposition occurs at low potentials where hydrogen evolution and dissolved oxygen contributes to electrochemical reactions at the substrate. After sample preparation extended Co islands on Au(111) up to four atomic layers in height are observed with bare Au(111) areas in between, which is an ideal sample surface for sp-STM at the solid/liquid interface showing ferromagnetic and diamagnetic areas. Sp-STM is employed in-situ at the solid/liquid interface to observe not only sample topography but also sample magnetization of the model system Co/Au (111)

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Elektrochemische Oberflächenphysik

Cited by 41 publications

References 137 publications

The interface between Au(100) and 1-butyl-3-methyl-imidazolium-bis(trifluoromethylsulfonyl)imide

The interface between Au(100) and 1-butyl-3-methyl-imidazolium-bis(trifluoromethylsulfonyl)imide

The Electrode/Ionic Liquid Interface: Electric Double Layer and Metal Electrodeposition

Spin-polarized scanning tunneling microscopy at the solid/liquid interface

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