Author
J.H. Sluyters
Bio: J.H. Sluyters is an academic researcher from Utrecht University. The author has contributed to research in topics: Dropping mercury electrode & Adsorption. The author has an hindex of 28, co-authored 113 publications receiving 4803 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, it was shown that the electrical double-layer at a solid electrode does not in general behave as a pure capacitance but rather as an impedance displaying a frequency-independent phase angle different from 90°.
2,602 citations
TL;DR: In this article, an interesting connection between the Tafel current at a fractal electrode, both in the limit of high and small overpotentials, and the admittance behavior of the same electrode on the other, reveals itself.
205 citations
TL;DR: In this paper, it was shown that an irreversible redox process at an electrode, the surface of which has the property of fractal roughness, gives rise to a depressed semi-circular arc in the complex impedance plane.
158 citations
TL;DR: In this article, a critical discussion is presented of some important theories for the electrode impedance in the case that the electroactive species are specifically adsorbed at the electrode-solution interface.
143 citations
TL;DR: In this article, the authors investigated simple models of electrocatalytic reactions with the aim of determining the possible origins of instabilities and oscillations under three fundamentally different ways of external control of the electrical state of the electrochemical cell.
114 citations
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TL;DR: In this paper, the authors report a protocol for evaluating the activity, stability, and Faradaic efficiency of electrodeposited oxygen-evolving electrocatalysts for water oxidation.
Abstract: Objective evaluation of the activity of electrocatalysts for water oxidation is of fundamental importance for the development of promising energy conversion technologies including integrated solar water-splitting devices, water electrolyzers, and Li-air batteries. However, current methods employed to evaluate oxygen-evolving catalysts are not standardized, making it difficult to compare the activity and stability of these materials. We report a protocol for evaluating the activity, stability, and Faradaic efficiency of electrodeposited oxygen-evolving electrocatalysts. In particular, we focus on methods for determining electrochemically active surface area and measuring electrocatalytic activity and stability under conditions relevant to an integrated solar water-splitting device. Our primary figure of merit is the overpotential required to achieve a current density of 10 mA cm–2 per geometric area, approximately the current density expected for a 10% efficient solar-to-fuels conversion device. Utilizing ...
4,808 citations
TL;DR: In this article, it was shown that the electrical double-layer at a solid electrode does not in general behave as a pure capacitance but rather as an impedance displaying a frequency-independent phase angle different from 90°.
2,602 citations
TL;DR: Two different mathematical formulas for estimating effective capacitance from CPE parameters, taken from the literature, are associated unambiguously with either surface or normal time-constant distributions as mentioned in this paper.
1,566 citations
Book•
01 Jan 2008
TL;DR: In this paper, the authors provide guidelines for experimental design, discuss the relevance of accuracy contour plots to wiring and instrumentation selection, and emphasize the importance of the Kramers-Kronig relations to data validation and analysis.
Abstract: Electrochemical impedance spectroscopy (EIS) is a powerful tool to investigate properties of materials and electrode reactions. This Primer provides a guide to the use of EIS with a comparison to other electrochemical techniques. The analysis of impedance data for reduction of ferricyanide in a KCl supporting electrolyte is used to demonstrate the error structure for impedance measurements, the use of measurement and process models, as well as the sensitivity of impedance to the evolution of electrode properties. This Primer provides guidelines for experimental design, discusses the relevance of accuracy contour plots to wiring and instrumentation selection, and emphasizes the importance of the Kramers-Kronig relations to data validation and analysis. Applications of EIS to battery performance, metal and alloy corrosion, and electrochemical biosensors are highlighted. Electrochemical impedance measurements depend on both the mechanism under investigation and extrinsic parameters, such as the electrode geometry. Experimental complications are discussed, including the influence of nonstationary behaviour at low frequencies and the need for reference electrodes. Finally, emerging trends in experimental and interpretation approaches are also described.
1,497 citations
TL;DR: In this paper, the dependence of the exchange current for the electrolytic evolution of hydrogen on metals (i 0,H ) on the work function is analyzed on the basic of a new list of polycrystalline surfaces.
1,474 citations