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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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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.
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Capacitors and Capacitance01:18

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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.
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Capacitors play a crucial role in car radios, where they filter and store frequencies to ensure clear signal reception. Essentially serving as energy storage devices, capacitors store energy within their electric field and are composed of two parallel conducting plates separated by a dielectric.
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Capacitor in an AC Circuit01:23

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A capacitor is charged by passing an electric current through it, which causes the plates to start accumulating an electrostatic charge. Since the strength of the charging current is maximum when the capacitor plates are uncharged and gradually decreases exponentially until the capacitor is fully charged, the charging process is neither instantaneous nor linear. The property of a capacitor to store a charge on its plates is called its capacitance.
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Multiple capacitors connected serve as electrical components in various applications. These multiple capacitors behave as a single equivalent capacitor, and its total capacitance depends on the capacitance of individual capacitors and the type of connections. Capacitors can be arranged in two - orientations, either in series or parallel connections.
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La funcionalidad covalente produce materiales supercondensadores de alto rendimiento

Neha Singh1, Priyanka Makkar1, Pradeep Sachan1

  • 1Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh, 208016, India.

Small (Weinheim an der Bergstrasse, Germany)
|September 4, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio introduce un nuevo material híbrido orgánico-inorgánico para supercondensadores de alto rendimiento. El nuevo material de electrodo ofrece una excelente capacidad y estabilidad para soluciones avanzadas de almacenamiento de energía.

Palabras clave:
8-aminoquinolinaCuFe2O4 y sus derivadosQuímica de las sales de arilo diazonioModificación covalenteDispositivo de supercondensador simétrico de estado sólido

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Área de la Ciencia:

  • Ciencias de los materiales
  • La electroquímica
  • Nanotecnología

Sus antecedentes:

  • Los materiales híbridos orgánicos e inorgánicos ofrecen ventajas sinérgicas para el almacenamiento de energía.
  • Los supercondensadores requieren materiales de electrodos avanzados para una mayor densidad de energía y estabilidad.
  • El almacenamiento de energía ecológico y de alto rendimiento es crucial para la electrónica portátil.

Objetivo del estudio:

  • Para sintetizar y caracterizar un nuevo material de electrodo híbrido orgánico-inorgánico.
  • Investigar los efectos sinérgicos de los componentes orgánicos e inorgánicos en el rendimiento de los supercondensadores.
  • Evaluar el potencial del material sintetizado para el almacenamiento de energía flexible y portátil.

Principales métodos:

  • Se recomienda que se utilicen las siguientes herramientas:
  • Análisis de superficie para confirmar la funcionalidad covalente y la formación de la interfaz.
  • Fabricación y ensayos electroquímicos de supercondensadores simétricos en estado sólido.

Principales resultados:

  • Síntesis exitosa de la heterostructura 8-Q-CuFe2O4 con una resistencia interfacial reducida.
  • Se ha demostrado una alta capacidad específica (418,3 Fg-1) y una excelente estabilidad en ciclos (81,2% después de 11.000 ciclos).
  • Se obtiene una alta densidad de energía (35,2 Wh kg-1) con una densidad de potencia de 1,600 W kg-1.

Conclusiones:

  • La heterostructura 8-Q-CuFe2O4 exhibe transferencia de carga sinérgica, lo que lleva a un mejor rendimiento del supercondensador.
  • El material es adecuado para aplicaciones de almacenamiento de energía de alto rendimiento, flexibles y portátiles.
  • Este trabajo promueve la tecnología de energía sostenible y portátil.