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Voltammetry: Overview

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: Linear-Scan (E vs Time)

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...

Voltammetry: Factors Affecting Measurements

Voltammetry: Factors Affecting Measurements

A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...

Voltammetric Techniques: Pulse Voltammetry

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: Cyclic Voltammetry

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...

Voltammograms: Overview

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

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Updated: Jun 28, 2026

Application of Voltage in Dynamic Light Scattering Particle Size Analysis

Application of Voltage in Dynamic Light Scattering Particle Size Analysis

Published on: January 24, 2020

Voltammetry in dimethylsulphoxide-a review.

T R Koch¹, W C Purdy

¹Department of Chemistry, University of Maryland, College Park, Md. 20742, U.S.A.

|September 1, 1972

Summary

This review covers voltammetric studies in dimethyl sulfoxide, detailing inorganic and organic systems. It also discusses reference electrodes developed for this specific electrochemical medium.

Area of Science:

Electrochemistry
Analytical Chemistry

Background:

Dimethyl sulfoxide (DMSO) is a versatile polar aprotic solvent with unique properties for electrochemical applications.
Understanding electrochemical behavior in DMSO is crucial for various analytical and synthetic processes.

Purpose of the Study:

To review and synthesize findings from voltammetric studies conducted in dimethyl sulfoxide.
To detail the types of inorganic and organic systems investigated electrochemically in DMSO.
To summarize the development and application of reference electrodes suitable for DMSO.

Main Methods:

Literature review of voltammetric studies.
Analysis of electrochemical data for inorganic and organic compounds in DMSO.
Examination of reference electrode designs and performance in DMSO.

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Last Updated: Jun 28, 2026

Application of Voltage in Dynamic Light Scattering Particle Size Analysis

Application of Voltage in Dynamic Light Scattering Particle Size Analysis

Published on: January 24, 2020

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

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Published on: August 4, 2023

Main Results:

Compilation of diverse inorganic and organic systems amenable to voltammetric analysis in DMSO.
Identification of specific challenges and solutions for reference electrode stability and potential in DMSO.
Demonstration of DMSO's utility as a supporting electrolyte in electrochemistry.

Conclusions:

Dimethyl sulfoxide is a valuable medium for a wide range of voltammetric studies.
Advancements in reference electrode technology have facilitated electrochemical investigations in DMSO.
Further research can leverage DMSO for novel electrochemical applications.