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Related Concept Videos

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

4.7K
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.
4.7K
Acid Halides to Alcohols: LiAlH4 Reduction01:19

Acid Halides to Alcohols: LiAlH4 Reduction

2.6K
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
2.6K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

39.2K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
39.2K
Acid Halides to Ketones: Gilman Reagent01:14

Acid Halides to Ketones: Gilman Reagent

2.7K
Lithium dialkyl cuprate, also known as Gilman reagents, selectively reduces acid halides to ketones. The acid chloride is treated with Gilman reagent at −78 °C in the presence of ether solution to produce a ketone in good yield.
As shown below, the mechanism proceeds in two steps. First, one of the alkyl groups of the reagent acts as a nucleophile and attacks the acyl carbon of the acid chloride to form a tetrahedral intermediate. This is followed by the reformation of the...
2.7K
Formation of Complex Ions03:45

Formation of Complex Ions

23.0K
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...
23.0K
Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

5.8K
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.
5.8K

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Updated: May 11, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Halide Chemistry Boosts All-Solid-State Li-S Batteries.

Feipeng Zhao1,2, Yanguang Li1,2

  • 1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China.

Advanced Materials (Deerfield Beach, Fla.)
|April 18, 2025
PubMed
Summary
This summary is machine-generated.

Halide chemistry enhances all-solid-state lithium-sulfur batteries (ASSLSBs) by activating sulfur cathodes and stabilizing lithium anodes. This approach boosts kinetics and prevents dendrite formation for improved energy storage.

Keywords:
catalytic effectshalide chemistryion/electron dual conductionredox kineticssolid‐state Li‐S batteries

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

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • All-solid-state lithium-sulfur batteries (ASSLSBs) offer high energy density and safety, overcoming limitations of liquid-electrolyte systems.
  • Solid-state interfaces in ASSLSBs present challenges like poor ion/electron transport and instability.
  • Halide-based strategies are emerging as a promising solution for high-performance ASSLSBs.

Purpose of the Study:

  • To highlight halide-based strategies for enhancing ASSLSB performance.
  • To emphasize the role of halide chemistry in improving ASSLSB kinetics and interfacial stability.
  • To provide insights for future research and development of halide-modified ASSLSBs.

Main Methods:

  • Review and analysis of recent literature on halide applications in ASSLSBs.
  • Focus on the chemical and electrochemical mechanisms of halide-sulfur and halide-anode interactions.
  • Discussion of the 'catalytic effect' of halides on redox reactions and interfacial properties.

Main Results:

  • Halides (e.g., iodides) in sulfur cathodes activate S/Li2S redox reactions, enhancing ionic and electronic conductivity.
  • Halides exhibit a catalytic effect, accelerating reversible sulfur conversion even without traditional conductive additives.
  • Halides at the anode interface suppress lithium dendrite growth and solid electrolyte degradation due to high interfacial energy and polarizability.

Conclusions:

  • Halide chemistry significantly improves the kinetics and stability of ASSLSBs.
  • The catalytic role of halides in cathodes and their protective function at anodes are crucial for high performance.
  • Halide-based strategies represent a promising direction for next-generation solid-state lithium-sulfur batteries.