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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

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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...
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Capacitor With A Dielectric01:18

Capacitor With A Dielectric

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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...
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Energy Stored in a Capacitor01:12

Energy Stored in a Capacitor

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When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.
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Energy Stored in Capacitors01:10

Energy Stored in Capacitors

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A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
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Energy Stored in a Capacitor: Problem Solving01:26

Energy Stored in a Capacitor: Problem Solving

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In 1749, Benjamin Franklin coined the word battery for a series of capacitors connected to store energy. Capacitors store electric potential energy that can be released over a short time. This property means capacitors have a wide range of applications.
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
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Types Of Superconductors01:28

Types Of Superconductors

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A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
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Updated: Sep 16, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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Vanadium-Based MXenes: Types, Synthesis, and Recent Advances in Supercapacitor Applications.

Zhiwei Gao1, Donghu Shi1, Jiawei Xu1

  • 1Hubei Key Laboratory of Energy Storage and Power Battery, School of Optoelectronic Engineering, School of New Energy, Hubei University of Automotive Technology, Shiyan 442002, China.

Nanomaterials (Basel, Switzerland)
|July 12, 2025
PubMed
Summary

Vanadium-based MXenes, like V2CTx and V4C3Tx, show promise for energy storage. This review covers their precursors, synthesis, and supercapacitor applications, highlighting current challenges and future research directions.

Keywords:
V2CTxV4C3Txderivativessupercapacitor applicationstwo-dimensional material

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Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
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Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electrochemistry

Background:

  • Two-dimensional transition metal carbides and nitrides (MXenes) offer tunable properties like hydrophilicity and conductivity.
  • Over 40 MXene compositions are synthesized, with vanadium-based MXenes (e.g., V2CTx, V4C3Tx) showing significant energy storage potential.

Purpose of the Study:

  • To review the structure, characteristics, and preparation of vanadium-based MXene precursors in the MAX phase.
  • To explore the application of vanadium-based MXenes in supercapacitors.
  • To identify current challenges and future research directions for vanadium-based MXenes and their heterostructures.

Main Methods:

  • Literature review focusing on MAX phase precursors for vanadium-based MXenes.
  • Analysis of synthesis methods for vanadium-based MXenes.
  • Evaluation of supercapacitor performance data for vanadium-based MXenes.

Main Results:

  • Vanadium-based MXenes exhibit promising characteristics for energy storage applications, particularly in supercapacitors.
  • MAX phase materials serve as crucial precursors for synthesizing these advanced MXenes.
  • The review consolidates current knowledge on synthesis and application.

Conclusions:

  • Vanadium-based MXenes are key materials for next-generation energy storage devices.
  • Further research is needed to overcome challenges in material synthesis and heterostructure design.
  • Future work should focus on optimizing vanadium-based MXenes for enhanced supercapacitor performance.