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

MOS Capacitor

MOS Capacitor

A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...

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.

Capacitor With A Dielectric

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

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...

You might also read

Related Articles

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

Sort by

Same author

Integrating Bone-Brain Axis Modulation and Tea Consumption for Enhancing Neurovascular Resilience and Patient Rehabilitation Education.

Food science & nutrition·2026

Same author

Application of Metal-Organic Framework-Based Electrochemiluminescence Sensors for Mycotoxin Detection in Food.

Biosensors·2026

Same author

Elucidating the role of Toxoplasma gondii EF-hand containing protein 1 in parasite biology and its potential as a subunit vaccine antigen.

Acta tropica·2026

Same author

Local Charge Engineering Through Anion-Cation Co-modulation for Multifunctional Programmable Electromagnetic Wave Attenuation.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Zinc oxide nanoparticles supplementation improve the quality and lipid profiles of frozen boar semen.

Frontiers in veterinary science·2026

Same author

Toll-like receptor-mediated innate immune response correlate with the pathogenicity of Eimeria tenella infection in SPF chickens.

Parasites & vectors·2026

Search research articles

Related Experiment Video

Updated: Sep 28, 2025

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

Published on: February 12, 2020

Constructing MXene-PANI@MWCNTs heterojunction with high specific capacitance towards flexible micro-supercapacitor.

Qiangqiang Wang¹, Yongsheng Fang¹, Maosheng Cao¹

¹School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.

|April 5, 2022

Summary

Researchers developed a novel MXene-PANI@MWCNTs (MPM) composite for micro-supercapacitors (MSCs). This material offers high capacitance and stability, enabling advanced flexible energy storage solutions for miniaturized electronics.

Keywords:

MXene PANI@MWCNTs electrode material heterojunction micro-supercapacitor

More Related Videos

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

Related Experiment Videos

Last Updated: Sep 28, 2025

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

Published on: February 12, 2020

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System

Published on: January 7, 2022

Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Micro-supercapacitors (MSCs) are crucial for powering miniaturized electronic devices.
Electrode material performance significantly impacts MSC energy storage capabilities.
Developing advanced electrode materials is key to enhancing MSC functionality.

Purpose of the Study:

To construct a ternary composite (MXene-PANI@MWCNTs - MPM) with a heterojunction structure.
To investigate the synergistic enhancement effects of MXene, polyaniline (PANI), and multiwall carbon nanotubes (MWCNTs) on energy storage.
To fabricate and evaluate flexible all-solid-state MSCs using MPM electrodes.

Main Methods:

Synthesis of a MXene-PANI@MWCNTs (MPM) ternary composite.
Characterization of the MPM composite for its electrochemical properties.
Fabrication of self-standing MPM films for electrode construction.
Assembly and testing of flexible all-solid-state MSCs.

Main Results:

The MPM composite achieved a specific capacitance of 414 F g^-1 at 1 A g^-1.
MPM demonstrated high capacitance retention (86.7% at 10 A g^-1) and cycling stability (90.4% over 10,000 cycles).
Flexible all-solid-state MSCs using MPM electrodes showed a charge storage capability of 30.2 mF cm^-2 with 70.2% stability over 10,000 cycles and excellent flexibility.

Conclusions:

The MPM ternary composite exhibits excellent charge storage properties due to synergistic effects.
MPM is a promising material for high-performance flexible energy-storage devices.
The developed flexible all-solid-state MSCs offer tunable voltage and current for practical applications.