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Related Concept Videos

Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

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Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
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Ionic Crystal Structures02:42

Ionic Crystal Structures

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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
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The Born-Haber Cycle02:44

The Born-Haber Cycle

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Lattice Energy 
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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

54.2K
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. 
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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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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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High-entropy lattice disordering enhances ion migration in LaCl3-based solid-state electrolytes.

Yongmei Zhou1, Zhenyang Shen1, Xiaozong Zhang1

  • 1Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, College of Engineering, Northwest Normal University, Lanzhou 730070, China. wangqt@nwnu.edu.cn.

Chemical Communications (Cambridge, England)
|April 2, 2026
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Summary

High-entropy disordered crystal structures enhance lithium-ion battery performance by lowering diffusion energy barriers. This design facilitates efficient 3D lithium-ion transport, improving overall conductivity.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Solid-State Chemistry

Background:

  • Lithium-ion diffusion is crucial for battery performance.
  • Developing materials with efficient ion transport is a key challenge.

Purpose of the Study:

  • To investigate how high-entropy disordered crystal structures affect lithium-ion diffusion.
  • To explore the potential of these structures for improved battery electrolytes.

Main Methods:

  • Computational modeling of crystal structures.
  • Analysis of activation energy for ion diffusion.
  • Characterization of 3D transport pathways.

Main Results:

  • High-entropy disordered structures significantly reduce activation energy for lithium-ion diffusion.
  • These structures create interconnected 3D channels facilitating ion transport.

Conclusions:

  • Disordered high-entropy materials offer a promising pathway for next-generation lithium-ion batteries.
  • Optimizing crystal structure disorder is key to enhancing ionic conductivity.