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

The Supercomplexes in the Crista Membrane

The Supercomplexes in the Crista Membrane

The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...

Oxidation-Reduction Reactions

Oxidation-Reduction Reactions

Oxidation–Reduction Reactions

Redox Reactions

Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...

Redox Reactions

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...

Redox Equilibria: Overview

Redox Equilibria: Overview

A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...

Electron Transport Chain: Complex III and IV

Electron Transport Chain: Complex III and IV

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...

You might also read

Related Articles

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

Sort by

Same author

Prediction of perovskite oxygen vacancies for oxygen electrocatalysis at different temperatures.

Nature communications·2024

Same author

Ultrastable, Superrobust, and Recyclable Supramolecular Polymer Networks.

Angewandte Chemie (International ed. in English)·2024

Same author

Segmental Abnormalities of White Matter Microstructure in Primary Hypothyroidism Identified by Automated Fiber Quantification.

Neuroendocrinology·2023

Same author

Altered thalamic functional connectivity and cerebral blood flow in insomnia disorder: a resting-state functional magnetic resonance imaging study.

Clinical imaging·2022

Same author

Microwave plasma rapid heating towards robust cathode/electrolyte interface for solid oxide fuel cells.

Journal of colloid and interface science·2021

Same author

Ultra-dispersed nickel-cobalt sulfides on reduced graphene oxide with improved power and cycling performances for nickel-zinc batteries.

Journal of colloid and interface science·2021

Search research articles

Related Experiment Video

Updated: May 23, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H₂ Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

Hierarchical CO(2)-protective shell for highly efficient oxygen reduction reaction.

Wei Zhou, Fengli Liang, Zongping Shao

Scientific Reports

|March 23, 2012

Summary

Researchers developed a novel cathode for solid oxide fuel cells, enhancing oxygen reduction and CO2 tolerance. This breakthrough improves efficiency and stability for intermediate-temperature fuel cells.

More Related Videos

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO₂ Reduction

Published on: April 10, 2018

Related Experiment Videos

Last Updated: May 23, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H₂ Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO₂ Reduction

Published on: April 10, 2018

Area of Science:

Materials Science
Electrochemistry
Energy Conversion

Background:

Intermediate-temperature solid oxide fuel cells (IT-SOFCs) face challenges with cathode efficiency in oxygen reduction reactions.
Cathode instability in the presence of carbon dioxide (CO2) impurities hinders widespread application.

Purpose of the Study:

To develop a novel cathode material for IT-SOFCs with improved oxygen reduction reaction (ORR) efficiency.
To enhance the cathode's stability and performance in CO2-containing environments.

Main Methods:

Fabrication of a hierarchical shell-covered porous cathode using infiltration and microwave plasma treatment.
Creation of a 3D heterostructured electrode with a dense thin-film substrate and cone-shaped shells.
Characterization of the cathode's performance and stability.

Main Results:

The hierarchical shell structure enables stable cathode operation in CO2-polluted air.
Significantly improved oxygen reduction reactivity was achieved, with an area specific resistance of approximately 0.13 Ωcm² at 575°C.
The fabrication method is versatile for irregularly shaped substrates.

Conclusions:

The developed hierarchical shell-covered cathode offers a promising solution for enhancing IT-SOFC performance and durability.
This approach addresses key limitations in current SOFC technology.
The method's adaptability suggests broad applicability in various energy conversion systems.