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Related Concept Videos

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

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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.
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Formation of Complex Ions03:45

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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...
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Related Experiment Video

Updated: Dec 28, 2025

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene
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Polymeric Sulfur as a Li Ion Conductor.

Yufei Sun1, Guiming Zhong2, Zheng Zhao1

  • 1College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China.

Nano Letters
|February 15, 2020
PubMed
Summary

Researchers developed a novel polymer electrolyte using a sulfur backbone, achieving high lithium-ion conductivity and stability for solid-state batteries. This new material offers a promising alternative to conventional electrolytes.

Keywords:
Li−S batterypolymer electrolytepolymeric sulfursolid-state battery

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Traditional polymer electrolytes rely on carbon-based backbones (-C-C-, -C-O-C-, -Si-O-).
  • These conventional materials have limitations in achieving optimal ion conductivity and stability.
  • Decades of research have focused on modifying existing polymer structures for improved performance.

Purpose of the Study:

  • To introduce a novel polymer electrolyte based on a polysulfide backbone.
  • To investigate the potential of high-sulfur content polymers for lithium-ion conduction.
  • To explore a new design platform for advanced polymer electrolytes.

Main Methods:

  • Synthesis of a novel polymer electrolyte with a -(S-S)- backbone and high sulfur content (up to 90 wt %).
  • Characterization of lithium-ion (Li+) conductivity.
  • Development of a hot-rolling process for membrane fabrication due to thermoplasticity.
  • Fabrication and testing of symmetric solid-state lithium cells.

Main Results:

  • Achieved a high Li+ conductivity of 1.69 × 10-3 S cm-1 at 80 °C.
  • Demonstrated excellent cycling stability over 300 hours in a solid-state Li cell.
  • Successfully fabricated a flexible poly-S membrane using a novel hot-rolling technique.

Conclusions:

  • The polysulfide backbone offers an intense 'solvating' environment for efficient Li+ conduction.
  • This novel polymer electrolyte presents a viable alternative to conventional carbon-based electrolytes.
  • The findings open a new avenue for designing high-performance polymer electrolytes for energy storage.