Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Equivalent Capacitance

Equivalent Capacitance

From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...

Equivalent Capacitance

Equivalent Capacitance

Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...

Capacitors and Capacitance

Capacitors and Capacitance

A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...

Standard Electrode Potentials

Standard Electrode Potentials

On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...

Design Example: Capacitance Multiplier Circuit

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.

Capacitance: Single-Phase And Three-Phase Line

Capacitance: Single-Phase And Three-Phase Line

In electrical power systems, understanding the capacitance of transmission lines is fundamental for efficient operation.
Single-Phase Lines
Consider a single-phase, two-wire transmission line with equal phase spacing energized by a voltage source. One conductor carries a uniform positive charge, while the other carries an equal negative charge. The capacitance C of the line can be derived from the voltage V between the conductors. For a one-meter section of the line, the capacitance is given...

You might also read

Related Articles

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

Sort by

Same author

Climate Change-Associated Environmental Factors and Pollutants: Impact on Allergic Diseases, Epidemiology, Severity, and Health Care Burden.

Journal of investigational allergology & clinical immunology·2025

Same author

Climate change and wind energy potential in South America.

The Science of the total environment·2024

Same author

How do Patients and Managers Value Gold Standard Elements in Primary Health Care.

Journal of patient experience·2024

Same author

Model and simulations of the effects of polyelectrolyte-coated electrodes in capacitive deionization.

Physical review. E·2024

Same author

Effects of finite counterion size and nonhomogeneous permittivity and viscosity of the solution on the electrokinetics of a concentrated salt-free colloid.

Physical review. E·2024

Same author

Hybrid wind-solar energy resources mapping in the European Atlantic.

The Science of the total environment·2024

Search research articles

Related Experiment Video

Updated: Feb 15, 2026

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Multiionic effects on the capacitance of porous electrodes.

M L Jiménez¹, S Ahualli, P Arenas-Guerrero

¹Department of Applied Physics, School of Sciences, University of Granada, 18071, Granada, Spain. jimenezo@ugr.es.

Physical Chemistry Chemical Physics : PCCP

|February 2, 2018

Summary

Capacitive energy and desalination devices rely on ionic electrosorption. Even small amounts of divalent ions significantly impact electrical double layer structure, affecting device performance.

More Related Videos

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

Published on: May 2, 2025

Related Experiment Videos

Last Updated: Feb 15, 2026

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

Published on: May 2, 2025

Area of Science:

Electrochemistry
Physical Chemistry
Materials Science

Background:

Capacitive energy storage and desalination devices utilize ionic electrosorption in electrical double layers (EDLs).
Ion confinement significantly influences ion distribution within EDLs under typical operating conditions.
Realistic applications necessitate understanding multi-ionic solutions, not just simple salt solutions.

Purpose of the Study:

To investigate the effect of multi-ionic solutions on electrical double layer structure.
To develop a model accounting for EDL overlap, Stern layer, and ion packing effects.

Main Methods:

A theoretical model was developed considering EDL overlap and Stern layer.
The Carnahan-Starling model was employed to account for ion packing.
The model was applied to analyze EDLs in multi-ionic solutions with divalent ions.

Main Results:

The proposed model's predictions differ significantly from the Bikerman equation, offering more realistic insights.
Even trace amounts of divalent ions in bulk solutions can dominate EDL behavior.
Divalent ions profoundly influence EDL capacitance, energy storage, and desalination properties.

Conclusions:

The developed model provides a more accurate representation of EDL structure in multi-ionic solutions.
Divalent ions play a critical role in the performance of capacitive energy and desalination systems.
Understanding multi-ionic effects is crucial for optimizing these technologies.