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Related Concept Videos

Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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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. 
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Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
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Formation of Complex Ions

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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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Bonding in Metals02:32

Bonding in Metals

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Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Related Experiment Video

Updated: Sep 19, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Ionic Conductive Binder Based on Fast Ion Conductor Interface Compatibilization for Lithium-Sulfur Batteries.

Lou Da1, Xiao Fangrong1, Hua Lan1

  • 1Shanghai Engineering Research Center of Hierarchical Nanomaterials, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.

Chemsuschem
|June 2, 2025
PubMed
Summary

A novel ionic conductive binder enhances lithium-sulfur battery performance. This binder improves charge transfer and lithium-ion migration, leading to better capacity and cycle life in batteries.

Keywords:
conductive bindersemulsion polymerizationfast ionic conductorlithium–sulfur batteriessulfur cathodes

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Insulating binders in lithium-sulfur batteries hinder charge transfer, limiting electrochemical performance.
  • Improving ionic conductivity is crucial for high-rate lithium-sulfur battery operation.

Purpose of the Study:

  • To synthesize a novel ionic conductive binder for lithium-sulfur batteries.
  • To enhance the electrochemical performance of lithium-sulfur batteries through improved binder design.

Main Methods:

  • In situ emulsion polymerization and lithiation neutralization were used to synthesize the binder.
  • A core-shell structure was formed by covalently bonding modified Li1.3Al0.3Ti1.7(PO4)3 nanoparticles to a lithiated copolymer.
  • The ionic conductivity and electrochemical performance of the binder in lithium-sulfur batteries were evaluated.

Main Results:

  • The synthesized ionic conductive binder (LPABM-d-LATP) achieved a room-temperature ionic conductivity of 2.5 × 10^-4 S cm^-1.
  • Lithium-sulfur batteries utilizing the LPABM-d-LATP binder exhibited a specific capacity of 941 mAh g^-1 at 4C.
  • The batteries demonstrated 80.1% capacity retention after 200 cycles at 0.5C.

Conclusions:

  • The developed ionic conductive binder significantly improves the electrochemical performance of lithium-sulfur batteries.
  • The core-shell structure and ionic conductivity of the binder synergistically enhance lithium-ion migration.
  • This binder represents a promising advancement for high-performance lithium-sulfur battery technology.