Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

MOS Capacitor01:25

MOS Capacitor

1.1K
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...
1.1K
Equivalent Capacitance01:19

Equivalent Capacitance

1.7K
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...
1.7K
Equivalent Capacitance01:19

Equivalent Capacitance

464
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...
464
Capacitor With A Dielectric01:18

Capacitor With A Dielectric

4.4K
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...
4.4K
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

1.1K
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.
1.1K
Spherical and Cylindrical Capacitor01:26

Spherical and Cylindrical Capacitor

6.2K
A spherical capacitor consists of two concentric conducting spherical shells of radii R1 (inner shell) and R2 (outer shell). The shells have  equal and opposite charges of +Q and −Q, respectively. For an isolated conducting spherical capacitor, the radius of the outer shell can be considered to be infinite.
Conventionally, considering the  symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field,...
6.2K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Interfacial Lewis Acid Chemistry Enabled by Mesoporous MOFs Toward High-Performance Four-Electron Zinc-Iodine Batteries.

Angewandte Chemie (International ed. in English)·2026
Same author

Modulating the interfacial solvation structure to promote hydroxyl migration for alkaline hydrogen oxidation.

Nature communications·2026
Same author

Mechanochemically Coupled Multidimensional Modulation of Calcium Overload.

ACS nano·2026
Same author

Switching from insertion to conversion for multielectron aqueous vanadium batteries.

Nature materials·2026
Same author

Mesoporous Catalytic-Adsorptive Nanoregulator Orchestrates Biofilm eDNA/LPS Disassembly and TLR9/TLR4 Immune Reprogramming to Resolve Diabetic Foot Infections.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Confinement-Engineered Ir-IrO<sub>2</sub> Interfaces Activate Hydrogen-Bond-Mediated Oxide Pathway Mechanism for Durable Acidic Water Oxidation.

Advanced materials (Deerfield Beach, Fla.)·2026

Video Experimental Relacionado

Updated: Oct 25, 2025

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

6.0K

Titania Mesoscópica Diseñada con Precisión para Pseudocapacitancia de Alta Densidad Volumétrica

Kun Lan1, Lu Liu1, Jun-Ye Zhang1

  • 1Laboratory of Advanced Materials, Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, People's Republic of China.

Journal of the American Chemical Society
|August 11, 2021
PubMed
Resumen

Los investigadores desarrollaron una estructura de dióxido de titanio (TiO2) a mesoscala para el almacenamiento de energía pseudocapacitiva de alta densidad. Este diseño supera las limitaciones de baja capacidad volumétrica en los nanomateriales, lo que permite una carga rápida y una entrega de alta potencia para baterías avanzadas.

Más Videos Relacionados

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
09:58

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

Published on: February 12, 2020

13.7K
A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

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

Published on: April 8, 2018

8.4K

Videos de Experimentos Relacionados

Last Updated: Oct 25, 2025

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

6.0K
Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
09:58

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

Published on: February 12, 2020

13.7K
A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

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

Published on: April 8, 2018

8.4K

Área de la Ciencia:

  • Ciencias de los materiales
  • La electroquímica
  • Nanotecnología

Sus antecedentes:

  • La pseudocapacitancia redox de superficie ofrece carga rápida y alta potencia, cruciales para las aplicaciones de almacenamiento de energía.
  • La nanoestructuración de materiales activos mejora la capacidad específica, pero a menudo conduce a una baja capacidad volumétrica debido a la escasa densidad del grifo.

Objetivo del estudio:

  • Desarrollar un material pseudocapacitivo de alta densidad mediante el diseño de una estructura de TiO2 a mesoescala.
  • Para superar la baja limitación de capacidad volumétrica de los nanomateriales en el almacenamiento de energía.

Principales métodos:

  • Fabricación de TiO2 a mesoscala con marcos mesoporosos controlados y canales alineados radialmente.
  • Caracterización de la superficie, la densidad del grifo y el rendimiento electroquímico como un ánodo de almacenamiento de iones de sodio.

Principales resultados:

  • El TiO2 mesoscópico exhibió una alta densidad de grifo (1,7 g cm-3) en comparación con las nanopartículas (0,47 g cm-3).
  • Capacidad gravimétrica máxima alcanzada (240 mAh g-1) y capacidad volumétrica (350 mAh cm-3) a 0,025 A g-1.
  • Se ha demostrado una capacidad de superficie comercialmente comparable (2,1 mAh cm-2) con una carga de masa elevada (9,47 mg cm-2).

Conclusiones:

  • La estructura de TiO2 de mesoscala diseñada con precisión sirve como un sistema de modelo pseudocapacitivo de alta densidad.
  • Esta mesostructura permite una rápida sodificación en nanoestructuras densas, con implicaciones para dispositivos de alta potencia y carga rápida.