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Related Concept Videos

Ion Exchange01:17

Ion Exchange

657
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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Anionic Chain-Growth Polymerization: Overview01:20

Anionic Chain-Growth Polymerization: Overview

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Ionic Bonds00:42

Ionic Bonds

121.5K
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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Batteries and Fuel Cells03:12

Batteries and Fuel Cells

28.0K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

63.8K
Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
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Related Experiment Video

Updated: Sep 9, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Cationic-Zwitterionic Polymer Electrolytes with Enhanced Ionic Conductivity and Lithium-Ion Selectivity for

Tuo Xiao1, Jinlin Xian1, Zehua Yu1

  • 1The Institute of Technological Sciences, MOE Key Laboratory of Hydrodynamic Transients, Wuhan University, Wuhan, 430072, China.

Angewandte Chemie (International Ed. in English)
|September 2, 2025
PubMed
Summary

Researchers developed new polymer electrolytes for solid-state lithium-metal batteries. These electrolytes achieve high ionic conductivity and selective lithium-ion transport, addressing key challenges for safer, scalable batteries.

Keywords:
Anion immobilizationCationic–zwitterionic polymersSalt dissociationSolid‐state lithium batteriesStability

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Polymer electrolytes are promising for solid-state lithium-metal batteries due to good interfacial compatibility and processability.
  • A major challenge is achieving both high ionic conductivity and a high lithium-ion transference number.

Purpose of the Study:

  • To develop novel polymer electrolytes with simultaneously high ionic conductivity and enhanced lithium-ion selectivity.
  • To address limitations in current solid-state battery electrolyte technology.

Main Methods:

  • Synthesized cationic-zwitterionic polymer electrolytes.
  • Incorporated cationic segments to immobilize anions and sulfonate groups for ion mobility.
  • Conducted structural and electrochemical analyses.

Main Results:

  • The new electrolytes demonstrated high ionic conductivity and selective lithium-ion transport.
  • Electrolytes showed stability and good performance in lithium symmetric cells and Li||LiFePO4 batteries.
  • A 1.2 Ah pouch cell confirmed practical scalability and safety.

Conclusions:

  • Cationic-zwitterionic polymer electrolytes offer a viable solution for high-performance solid-state lithium-metal batteries.
  • These electrolytes enhance lithium-ion selectivity and conductivity, paving the way for next-generation batteries.