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

Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

6.1K
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
6.1K
Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

4.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.8K
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

558
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...
558
Colors and Magnetism03:02

Colors and Magnetism

11.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.6K
Valence Bond Theory02:42

Valence Bond Theory

8.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.5K
Radical Reactivity: Overview01:11

Radical Reactivity: Overview

2.1K
Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired...
2.1K

You might also read

Related Articles

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

Sort by
Same author

A Multifunctional Electrocatalyst for Formate Production with Concurrent Hydrogen Evolution and Electrochemical Hydrogenation of Glucose to Sorbitol.

ACS applied materials & interfaces·2026
Same author

General Oxidative Chemical Activation of Neutral Exciton Emission in Colloidal MoS<sub>2</sub> Monolayers.

Journal of the American Chemical Society·2026
Same author

Electrode surface engineering with electrolyte additives, improving reversibility of magnesium metal anode batteries.

EES batteries·2026
Same author

Nickel and platinum modified exfoliated carbon nitride as photo-thermal catalysts for CO<sub>2</sub> hydrogenation.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Manganese Oxide Catalysts for Lithium-Oxygen Batteries: Structures, Mechanisms, and Reaction Pathway Engineering.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

<i>In Situ</i> Mineralization of Gold Nanoparticles from Sodium Aurothiomalate or Tetrachloroauric Acid in Human Cells.

ACS nanoscience Au·2026

Related Experiment Video

Updated: Jun 21, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.0K

Promoting Polysulfide Redox Reactions through Electronic Spin Manipulation.

Jing Yu1,2, Chen Huang2,3, Oleg Usoltsev4

  • 1Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, 08193 Bellaterra, Barcelona, Catalonia, Spain.

ACS Nano
|July 9, 2024
PubMed
Summary

Introducing spin polarization via cobalt vacancies in CoSe nanosheets significantly enhances lithium-sulfur battery performance by improving polysulfide adsorption and catalytic activity.

Keywords:
cobalt selenidelithium polysulfidelithium−sulfur batteryspin polarizationvacancy

More Related Videos

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K
06:45

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K

Published on: January 11, 2019

9.1K
Detection of Nitric Oxide and Superoxide Radical Anion by Electron Paramagnetic Resonance Spectroscopy from Cells using Spin Traps
13:21

Detection of Nitric Oxide and Superoxide Radical Anion by Electron Paramagnetic Resonance Spectroscopy from Cells using Spin Traps

Published on: August 18, 2012

19.0K

Related Experiment Videos

Last Updated: Jun 21, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.0K
Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K
06:45

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K

Published on: January 11, 2019

9.1K
Detection of Nitric Oxide and Superoxide Radical Anion by Electron Paramagnetic Resonance Spectroscopy from Cells using Spin Traps
13:21

Detection of Nitric Oxide and Superoxide Radical Anion by Electron Paramagnetic Resonance Spectroscopy from Cells using Spin Traps

Published on: August 18, 2012

19.0K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Lithium-sulfur batteries (LSBs) are promising for next-generation energy storage.
  • Catalytic additives are crucial for accelerating the lithium-sulfur redox reaction in LSBs.
  • Current additive design focuses on charge distribution, but electronic spin configuration's role is underexplored.

Purpose of the Study:

  • To investigate the impact of electronic spin configuration on polysulfide adsorption and catalytic activity in LSB additives.
  • To explore defect engineering, specifically Co vacancies in CoSe nanosheets, to manipulate spin polarization.
  • To demonstrate how altered spin states enhance LSB performance.

Main Methods:

  • Synthesized CoSe nanosheets with engineered cobalt (Co) vacancies.
  • Utilized defect engineering to induce spin polarization and alter electron spin state distribution.
  • Analyzed the effect of these changes on polysulfide adsorption and Li-S redox reaction kinetics.
  • Fabricated and tested LSB cathodes with the modified CoSe additive.

Main Results:

  • Introduction of Co vacancies created spin polarization, increasing unpaired, aligned electrons.
  • Enhanced spin configuration improved polysulfide adsorption and reduced Li-S redox reaction activation energy.
  • Achieved more uniform Li2S nucleation and growth, accelerating liquid-solid conversion.
  • Demonstrated high reversible capacities (1089 mA h g⁻¹ at 1 C) and excellent cycling stability (0.017% capacity loss/1500 cycles).
  • High sulfur loading cells showed superior performance (5.2 mA h cm⁻² with 0.16% decay/cycle).

Conclusions:

  • Electronic spin configuration is a critical parameter for designing effective catalytic additives in LSBs.
  • Defect engineering, specifically creating vacancies, is a viable strategy to tune spin states for enhanced battery performance.
  • The developed CoSe additive with engineered vacancies offers a promising pathway for advancing high-performance lithium-sulfur batteries.