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

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

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.

Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

Voltaic/Galvanic Cells

Voltaic/Galvanic Cells

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,...

Electrolysis

Electrolysis

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...

You might also read

Related Articles

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

Sort by

Same author

Ill Fate of Rectal Mucinous Adenocarcinoma: A Defect in Immunosurveillance or a Mucin Coating Effect?-The IMMUNOREACT 20 Study.

Cancers·2026

Same author

Immune Cell Therapy Promises More Effective Cure for Medulloblastoma.

Journal of personalized medicine·2026

Same author

The impact of anion mixing on Li<sup>+</sup> coordination and transport properties in pyrrolidinium-based ionic liquid electrolytes.

Physical chemistry chemical physics : PCCP·2026

Same author

Insight into the Mechanism of MXene Electrodes in Alkali Metal Batteries.

Nanomaterials (Basel, Switzerland)·2026

Same author

IMMUNOREACT 4: Peritumoral Microenvironment Associated with Anastomotic Leaks After Surgery for Rectal Cancer.

Cancers·2026

Same author

Does the B7-H3 Immune Checkpoint Have High Potential as a Therapeutic Target?

Cells·2026

Search research articles

Related Experiment Video

Updated: Oct 9, 2025

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Published on: March 7, 2022

Polysulfide Speciation and Migration in Catholyte Lithium-Sulfur Cells.

Matthew Sadd¹, Marco Agostini¹, Shizhao Xiong¹

¹Department of Physics, Chalmers University of Technology, 41296, Göteborg, Sweden.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry

|December 23, 2021

Summary

Semi-liquid catholyte Lithium-Sulfur (Li-S) cells show promise for high energy density. Polysulfide migration is key to maximizing capacity and anode stability in these advanced Li-S batteries.

Keywords:

catholyte lithium−sulfur (Li−S) battery operando Raman spectroscopy polysulfides radical species

More Related Videos

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

Related Experiment Videos

Last Updated: Oct 9, 2025

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway

Published on: March 7, 2022

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

Area of Science:

Electrochemistry
Materials Science
Spectroscopy

Background:

Semi-liquid catholyte Lithium-Sulfur (Li-S) cells offer high energy density potential.
Li-S cells utilize sulfur conversion to soluble polysulfides, with catholyte cells using dissolved polysulfides as active material.

Purpose of the Study:

To investigate the speciation and migration of polysulfides in catholyte Li-S cells using operando Raman spectroscopy.
To elucidate the role of polysulfide migration in enhancing performance and interphase stability.

Main Methods:

Operando Raman spectroscopy to track polysulfide speciation and migration.
Ex-situ surface and electrochemical analysis to complement spectroscopic data.

Main Results:

Polysulfide migration is crucial for maximizing capacity and ensuring Li-metal anode stability.
Catholytes without traditional Li-salts enhance polysulfide mobility and migration speed.
Shorter chain polysulfides form and migrate rapidly, delaying long chain formation and improving capacity.

Conclusions:

Optimizing polysulfide migration is essential for high-performance catholyte Li-S cells.
The depletion of ionic species and sulfur precipitation during charging can lead to cell polarization and incomplete conversion.