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

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

27.8K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
27.8K
Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

58.2K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
58.2K
Electron Transport Chain: Complex III and IV01:43

Electron Transport Chain: Complex III and IV

7.9K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
7.9K
Electron Transport Chains01:28

Electron Transport Chains

100.9K
The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...
100.9K
Electrolysis03:00

Electrolysis

27.2K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
27.2K
The Electron Transport Chain01:30

The Electron Transport Chain

17.1K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
17.1K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Toward Efficient Hydrogen Production: Impact of Solid Solution of Tungsten on Nickel-Iron Hydroxide OER Catalysts.

ACS catalysis·2026
Same author

Breaking the Linear Scaling Relations for the Oxygen Reduction Reaction with a Dual-Atom Catalyst Composed of a MnFe-Porphyrrole Aerogel.

Angewandte Chemie (International ed. in English)·2025
Same author

Anion-Exchange-Membrane Electrolysis with Alkali-Free Water Feed.

Chemical reviews·2025
Same author

Morphological and structural design through hard-templating of PGM-free electrocatalysts for AEMFC applications.

Nanoscale·2024
Same author

Applying Nuclear Forward Scattering as <i>In Situ</i> and <i>Operando</i> Tool for the Characterization of FeN<sub>4</sub> Moieties in the Hydrogen Evolution Reaction.

Journal of the American Chemical Society·2024
Same author

Introducing Electron Buffers into Intermetallic Pt Alloys against Surface Polarization for High-Performing Fuel Cells.

Journal of the American Chemical Society·2024

Video Experimental Relacionado

Updated: Aug 13, 2025

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.1K

Las pilas de combustible de quinona directa

Yan Yurko1, Lior Elbaz1

  • 1Department of Chemistry, Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel.

Journal of the American Chemical Society
|January 20, 2023
PubMed
Resumen
Este resumen es generado por máquina.

Las pilas de combustible directas de hidroquinona (DQFC) ofrecen una solución de energía sostenible, superando las pilas de combustible directas de metanol (DMFC) en tres veces. Este nuevo sistema utiliza ácido antraquinónico-2,7-disulfónico (AQDS) como portador de hidrógeno líquido y funciona de manera reversible sin catalizadores de ánodo.

Más Videos Relacionados

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

22.1K
Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells
08:16

Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells

Published on: October 2, 2016

9.6K

Videos de Experimentos Relacionados

Last Updated: Aug 13, 2025

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.1K
On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

22.1K
Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells
08:16

Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells

Published on: October 2, 2016

9.6K

Área de la Ciencia:

  • La electroquímica y las tecnologías energéticas sostenibles
  • Ciencia de los materiales para el almacenamiento de energía
  • Ingeniería química para el desarrollo de pilas de combustible

Sus antecedentes:

  • La creciente demanda de energía sostenible impulsa la adopción de la tecnología de pilas de combustible.
  • Los transportadores de hidrógeno líquido (LHC) como el metanol se utilizan en las pilas de combustible LHC directas (por ejemplo, DMFC).
  • Los DMFC existentes se enfrentan a desafíos de durabilidad y costo debido a las altas cargas de catalizador y la formación de subproductos.

Objetivo del estudio:

  • Desarrollar y caracterizar las pilas de combustible directas de hidroquinona (DQFC) utilizando el ácido antraquinona-2,7-disulfónico (AQDS) como nuevo LHC.
  • Evaluar el rendimiento de los DQFC en comparación con la tecnología DMFC existente.
  • Para demostrar el potencial de un sistema de pila de combustible reversible utilizando quinona.

Principales métodos:

  • Desarrollo de DQFC que utilicen el AQDS como portador de hidrógeno líquido.
  • Funcionamiento de flujo continuo de quinona dentro del sistema de pila de combustible.
  • Optimización de las condiciones de funcionamiento para maximizar el rendimiento de la pila de combustible.

Principales resultados:

  • Los DQFC demuestran una densidad de potencia máxima tres veces mayor que los DMFC de última generación.
  • El ánodo de los DQFC funciona eficazmente sin necesidad de ningún catalizador.
  • El quinone fue cargado con éxito con protones in situ, estableciendo un sistema de pila de combustible reversible.

Conclusiones:

  • Los DQFC representan un avance prometedor en la tecnología de pilas de combustible, ofreciendo un rendimiento superior y un diseño simplificado.
  • El ánodo sin catalizador y el funcionamiento reversible resaltan el potencial de AQDS como un LHC eficiente.
  • Una mayor optimización de las condiciones de funcionamiento puede mejorar la aplicación práctica de los DQFC para la energía sostenible.