Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Electrochemistry: Overview01:04

Electrochemistry: Overview

3.6K
Electrochemistry is the branch of chemistry that studies the relationship between electrical quantities and chemical reactions, particularly oxidation and reduction. Oxidation is the loss of electrons from a substance, whereas reduction refers to the gain of electrons. A substance with a strong electron affinity is called an oxidizing agent (oxidant), and a reducing agent (reductant) is a species that donates electrons. Oxidation and reduction processes are pivotal to electrochemical reactions,...
3.6K
Autoxidation of Ethers to Peroxides and Hydroperoxides02:23

Autoxidation of Ethers to Peroxides and Hydroperoxides

9.5K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
9.5K
Regioselectivity of Electrophilic Additions-Peroxide Effect02:35

Regioselectivity of Electrophilic Additions-Peroxide Effect

10.6K
In the presence of organic peroxides, the addition of hydrogen bromide to an alkene yields the isomer that is not predicted by Markovnikov’s rule. For example, the addition of hydrogen bromide to 2-methylpropene in the presence of peroxides gives 1-bromo-2-methylpropane. This addition reaction proceeds via a free radical mechanism, which reverses the regioselectivity. The free radical reaction mechanism involves three stages: initiation, propagation, and termination.
10.6K
Reversible and Irreversible Processes01:14

Reversible and Irreversible Processes

5.8K
The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
5.8K
Diode: Reverse bias01:14

Diode: Reverse bias

1.9K
A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
1.9K
Secondary Motives: Power Motivation and Achievement Motivation01:27

Secondary Motives: Power Motivation and Achievement Motivation

556
Power motivation and achievement motivation are two essential social motives identified by psychologist David McClelland. These motives influence behavior in various personal and professional contexts, shaping how individuals interact with others and pursue their goals.
Power motivation is characterized by the desire to influence, control, or have an impact on others. It is shaped by an individual's experiences, social environment, and cultural context. People with high power motivation are...
556

You might also read

Related Articles

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

Sort by
Same author

Electrodeposited Cobalt Nanosheets on Smooth Silver as a Bifunctional Catalyst for OER and ORR: In Situ Structural and Catalytic Characterization.

ACS applied materials & interfaces·2022
Same author

Mono and dual hetero-structured M@poly-1,2 diaminoanthraquinone (M = Pt, Pd and Pt-Pd) catalysts for the electrooxidation of small organic fuels in alkaline medium.

RSC advances·2022
Same author

Electrochemical Reduction of O<sub>2</sub> in Ca<sup>2+</sup> -Containing DMSO: Role of Roughness and Single Crystal Structure.

ChemSusChem·2021
Same author

The Oxygen Reduction Reaction in Ca<sup>2+</sup> -Containing DMSO: Reaction Mechanism, Electrode Surface Characterization, and Redox Mediation*.

ChemSusChem·2020
Same author

SLIM: A Short-Linked, Highly Redox-Stable Trityl Label for High-Sensitivity In-Cell EPR Distance Measurements.

Angewandte Chemie (International ed. in English)·2020
Same author

Antimony deposition onto Au(111) and insertion of Mg.

Beilstein journal of nanotechnology·2020

Related Experiment Video

Updated: Jan 29, 2026

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
10:01

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase

Published on: December 4, 2017

12.7K

K-O2 electrochemistry: achieving highly reversible peroxide formation.

Philip Heinrich Reinsberg1, Andreas Koellisch, Pawel Peter Bawol

  • 1Institut für Physikalische und Theoretische Chemie, Universität Bonn, Römerstraße 164, D-53117 Bonn, Germany. baltruschat@uni-bonn.de.

Physical Chemistry Chemical Physics : PCCP
|February 7, 2019
PubMed
Summary

Researchers studied oxygen reactions in potassium-dimethyl sulfoxide systems to understand lithium-air battery mechanisms. They found reversible peroxide formation, crucial for improving battery performance and reversibility.

More Related Videos

Simultaneous Measurement of Superoxide/Hydrogen Peroxide and NADH Production by Flavin-containing Mitochondrial Dehydrogenases
08:57

Simultaneous Measurement of Superoxide/Hydrogen Peroxide and NADH Production by Flavin-containing Mitochondrial Dehydrogenases

Published on: February 24, 2018

10.5K
Author Spotlight: Advancing Mitochondrial Research - mtHyper7 Biosensor for Subcellular Analysis
09:47

Author Spotlight: Advancing Mitochondrial Research - mtHyper7 Biosensor for Subcellular Analysis

Published on: June 2, 2023

3.3K

Related Experiment Videos

Last Updated: Jan 29, 2026

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
10:01

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase

Published on: December 4, 2017

12.7K
Simultaneous Measurement of Superoxide/Hydrogen Peroxide and NADH Production by Flavin-containing Mitochondrial Dehydrogenases
08:57

Simultaneous Measurement of Superoxide/Hydrogen Peroxide and NADH Production by Flavin-containing Mitochondrial Dehydrogenases

Published on: February 24, 2018

10.5K
Author Spotlight: Advancing Mitochondrial Research - mtHyper7 Biosensor for Subcellular Analysis
09:47

Author Spotlight: Advancing Mitochondrial Research - mtHyper7 Biosensor for Subcellular Analysis

Published on: June 2, 2023

3.3K

Area of Science:

  • Electrochemistry
  • Battery Technology
  • Materials Science

Background:

  • Lithium-air batteries are promising energy storage devices.
  • Understanding oxygen reduction and evolution reactions in aprotic solvents is key.
  • Current mechanistic understanding of these reactions needs refinement.

Purpose of the Study:

  • To investigate the oxygen reaction mechanism in a potassium-ion/dimethyl sulfoxide system.
  • To refine the mechanistic picture of oxygen reduction in aprotic environments.
  • To explore the reversibility of peroxide formation and its impact on battery performance.

Main Methods:

  • Differential electrochemical mass spectrometry (DEMS) in a generator-collector setup.
  • Classical electrochemical techniques.
  • Systematic variation of oxygen partial pressure (0-1 atm).

Main Results:

  • Demonstrated reversible formation of insoluble potassium peroxide and slightly soluble superoxide.
  • Showed potassium peroxide can be reoxidized to superoxide with a low overpotential (100 mV).
  • Identified that superoxide precipitation increases peroxide oxidation overpotential.

Conclusions:

  • The study provides a refined mechanistic understanding of oxygen reactions in aprotic systems.
  • Reversible peroxide formation is confirmed, with implications for lithium-air battery design.
  • Findings link to previous studies that did not identify peroxide formation reversibility.