$\small R_\text p = \lim \limits_{f \rightarrow 0} \text{Re} \;Z$. Why?
Why is the polarization resistance the finite low-frequency limit of the impedance? This Learning Center article explains why...
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SKP and the Fringing Effect
The fringing effect and its role in Scanning Kelvin Probe (SKP) is introduced.
The easy way to D – the diffusion coefficient
Performing EIS experiments on a Rotating Disk Electrode is a really easy way to access the diffusion coefficient of the electroactive species in the considered electrolyte.
ZSim and ZFit as learning tools. Part I – Acidic corrosion
An overview of ZSim the powerful Electrochemical Impedance Spectroscopy (EIS) simulation tool available in EC-Lab®,
$\small R_\text p = \lim \limits_{f \rightarrow 0} \text{Re} \;Z$. Why?
Why is the polarization resistance the finite low-frequency limit of the impedance? This Learning Center article explains why...
CVSim as a learning tool. I. Diffusion coefficient
What is CVSim and how it can be used to determine the diffusion constant of a reactive species involved in a reversible redox reaction.
How to correct impedance measurements when using longer cables or a test fixture (Electrochemistry Basics Series)
Focus on your Device under Test. How to remove parasitic impedance due to extension cables or connection interfaces
The different current and voltage setpoint options in EC/BT-Lab®
This article presents the various options available in EC/BT-Lab® for potential and current setpoints.
How to use electrochemical impedance spectroscopy (EIS) accuracy contour plots
EIS accuracy contour plots must be used to interpret errors made during EIS measurements and identify the best frequencies possible for a given impedance range.
ic-SECM101: An Introduction to Intermittent Contact-Scanning Electrochemical Microscopy
An overview of Intermittent Contact-Scanning Electrochemical Microscopy
The RRDE as a pH probe in situ
The Rotating Ring Disk Electrode (RRDE) Ring can be used as a potentiometric or amperometric in situ pH probe. This is extremely useful to study electrochemical reactions that involves OH- or H+ ions.
Effect of the staircase on current sampling.
The effect of the staircase on current sampling
Checking and validating reference electrodes (Electrochemistry basics series)
The reference electrode is part of the 3-electrode setup. A bad reference electrode can impact negatively on measurements. In this article, we discuss the protocol necessary to check reference electrodes.
Investigation of impedance measurements using the Z Sim tool (Electrochemistry Basics Series)
To adjust the frequency range of your EIS experiment or just to see the shape of your model, Z Sim is available on both EC-Lab® and BT-Lab® software.
Ohmic drop correction: a means of improving measurement accuracy
The effect of the ohmic drop on electrochemical measurements and methods for its correction.
Nyquist plots: Why use the orthonormal scale?
This article illustrates why the orthonormal scale should be used for Nyquist impedance plots.
dc-SECM and the SECM150
The dc-SECM technique. Includes a link to a more detailed, downloadable document.
Rotating Ring Disk Electrode: an Introduction
The principles and main uses of the Rotating Ring Disk Electrode.
100th Learning Center Published
How to get the best out of BioLogic's Learning Center
How do I customize my plots?
A suitable plot with the right variables allows you directly access the results and saves a great deal of time during the analysis. In this short article we show you how...
An investigation of corrosion kinetics using BioLogic’s Corr.Sim tool
Corr. Sim is a simulation tool developed to gain a better understanding of the corrosion behaviour of a material in a given environment.
Levich analysis: the principles
The Levich analysis is mainly used to determine the diffusion coefficient of a redox species. But how does it work exactly?
ac-SECM101: An Introduction to Alternating Current-Scanning Electrochemical Microscopy
A short article outlining the principles and benefits of Alternating Current-Scanning Electrochemical Microscopy
Create and save your own protocols
Learn how to save time by configuring full experiments from previous settings; including safety limits, advanced settings, cell characteristics and external device configuration.
Koutecký-Levich analysis: the principles
The Koutecký-Levich analysis is used to determine kinetic parameters of a redox reaction. But how does it work exactly?
How to measure reaction kinetics parameters using Cycling Voltammetry (CV)
Learn how to measure redox reaction kinetics parameters by performing cyclic voltammetry at various potential scan rates.
Split electrochemical impedance spectroscopy (EIS) experiments into multiple sequences: save time without compromising quality
Reliable impedance measurements require the system under study to remain linear and stationary during the whole measurement sequence. This article describes the ideal configuration for studying unstable systems such as batteries or supercaps to save time while maintaining good measurement quality.
Work smarter, not harder: Tech-tips
A series of short articles explaining how to work more efficiently and streamline your workflow
QCM: History and principles
The principles behind the QCM technique are described as well as an introduction to its history.
QCM: Why measure at overtones matters
The benefits of QCM measurements at overtones are described.
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