Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Voltammetric Techniques: Cyclic Voltammetry01:10

Voltammetric Techniques: Cyclic Voltammetry

Cyclic voltammetry (CV) is an electrochemical technique used to investigate the redox properties of a chemical species. It involves measuring the current response of an electrochemical cell as a function of the applied potential. The setup for cyclic voltammetry typically consists of a working electrode, a reference electrode, and a counter electrode—all immersed in an electrolyte solution. The working electrode is where the redox reaction of interest occurs, while the reference electrode...
Voltammetry: Overview01:20

Voltammetry: Overview

Voltammetry is an electroanalytical technique in which the current flowing through an electrochemical cell is measured as a function of applied potential, typically under conditions of concentration polarization. The technique provides valuable information about redox-active species, and the current response is plotted as a voltammogram.
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
Voltammetric Techniques: Pulse Voltammetry01:17

Voltammetric Techniques: Pulse Voltammetry

Differential-pulse voltammetry (DPV) is a type of voltammetry that involves applying a series of voltage pulses to an electrochemical cell while measuring the resulting current. In DPV, the differential pulse or small potential pulses are superimposed on a linear potential sweep. The magnitude of these pulses is typically small, often in the millivolt range. Each voltage pulse lasts a short duration, usually in the order of a few milliseconds, and is applied at regular intervals along the...
Voltammetric Techniques: Linear-Scan (E vs Time)01:12

Voltammetric Techniques: Linear-Scan (E vs Time)

Polarography is a classical voltammetric technique used to analyze electrochemical reactions. This method applies a linear potential sweep to a dropping mercury electrode (DME), and the resulting current is measured. A dropping mercury electrode is commonly used as the working electrode in polarography. It consists of a capillary tube filled with mercury, where the tiny droplet forms at the tip. This droplet continuously drops from the capillary, creating a new electrode surface for each...
Voltammograms: Overview01:16

Voltammograms: Overview

Voltammograms are current plots as a function of applied potential, offering insights into electrochemical systems. The shape of a voltammogram depends on how the current is measured and whether convection (heat transfer by fluid movement) is present or absent.
Shapes of Voltammograms
Controlled-Potential Coulometry: Electrolytic Methods01:17

Controlled-Potential Coulometry: Electrolytic Methods

Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential ensures...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Rapid Decoupled Electrochemical Reduction of CO<sub>2</sub> to Syngas.

ChemSusChem·2026
Same author

Homogeneous redox catalysed reduction of CO<sub>2</sub> by nickel cyclam catalyst and chromium-based redox mediator.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Additive Manufacturing of Nanoscale Multimaterial Voxels Via Meniscus-Confined Electrodeposition.

ACS nano·2026
Same author

Computational and experimental determination of electrochemical standard rate constant from cyclic voltammetry: insights into <i>α</i> + <i>β</i> ≠ 1 systems.

RSC advances·2025
Same author

Exploring the determination of the standard rate constant in electrochemical metal deposition: theory and experiment.

Chemical science·2025
Same author

The redox aspects of lithium-ion batteries.

Energy & environmental science·2025

Related Experiment Video

Updated: May 16, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Steady-state macroscale voltammetry in a supercritical carbon dioxide medium.

Kathryn E Toghill1, Patrick Voyame, Dmitry Momotenko

  • 1Laboratoire d'Electrochimie Physique et Analytique (LEPA), Ecole polytechnique fédérale de Lausanne (EPFL), Institut des sciences et ingénierie chimiques (ISIC), Lausanne, Switzerland.

Physical Chemistry Chemical Physics : PCCP
|December 6, 2012
PubMed
Summary

Researchers studied electrochemistry in supercritical carbon dioxide, observing fast mass transport and steady-state voltammetry. A novel electrolyte enabled a conducting supercritical phase, revealing a liquid-like co-solvent layer at the electrode surface.

More Related Videos

Waste Water Derived Electroactive Microbial Biofilms: Growth, Maintenance, and Basic Characterization
11:58

Waste Water Derived Electroactive Microbial Biofilms: Growth, Maintenance, and Basic Characterization

Published on: December 29, 2013

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
10:23

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System

Published on: August 23, 2024

Related Experiment Videos

Last Updated: May 16, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Waste Water Derived Electroactive Microbial Biofilms: Growth, Maintenance, and Basic Characterization
11:58

Waste Water Derived Electroactive Microbial Biofilms: Growth, Maintenance, and Basic Characterization

Published on: December 29, 2013

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
10:23

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System

Published on: August 23, 2024

Area of Science:

  • Electrochemistry
  • Supercritical Fluids
  • Physical Chemistry

Background:

  • Supercritical fluids offer unique solvent properties.
  • Electrochemical studies in supercritical CO2 are challenging due to conductivity limitations.
  • Decamethylferrocene is a well-studied redox probe.

Purpose of the Study:

  • To investigate the electrochemical behavior of decamethylferrocene in supercritical carbon dioxide.
  • To develop a suitable electrolyte system for electrochemical measurements in supercritical CO2.
  • To understand mass transport phenomena at the electrode-solution interface.

Main Methods:

  • Cyclic voltammetry at a macro gold disc electrode.
  • Utilizing a highly lipophilic room temperature ionic liquid with acetonitrile as a co-solvent.
  • Operating at 100 bar and 313 K.
  • Employing electrochemical simulations.

Main Results:

  • Demonstrated successful electrochemical oxidation and reduction of decamethylferrocene.
  • Observed fast mass transport and steady-state voltammetry at high scan rates.
  • Confirmed the formation of a liquid-like co-solvent layer at the electrode surface.
  • Validated experimental findings with simulation results.

Conclusions:

  • A conducting supercritical single phase electrolyte system was successfully established.
  • The study provides insights into electrode-interface phenomena in supercritical fluids.
  • Fast mass transport is characteristic of electrochemical systems in supercritical CO2 under these conditions.