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相关概念视频

Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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...
Ionic Crystal Structures02:42

Ionic Crystal Structures

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...
Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Lattice Energies of Ionic Crystals01:27

Lattice Energies of Ionic Crystals

Lattice energy represents the energy released when gaseous cations and anions combine to form an ionic solid, reflecting the strength of electrostatic interactions within the crystal. This process is fundamentally governed by Coulombic attraction between oppositely charged ions, where the potential energy varies inversely with the interionic distance and directly with the product of ionic charges. As ions approach one another, the electrostatic energy becomes increasingly negative, indicating a...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

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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相关实验视频

Updated: Jul 11, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

晶体结构工程使LAGP固态电解质中的增强离子导电性成为可能.

Miaomiao Lyu1, Ying Li2, Chao Zhang1

  • 1University of Science and Technology Beijing, Beijing, China.

Chemistry (Weinheim an der Bergstrasse, Germany)
|March 28, 2025
PubMed
概括

研究人员通过改造酸 (LAGP) 电解质的晶体结构来增强固态电池 (SSLB). 使用γ-Al2O3提高了离子导电性,这是提高电池性能和安全性的关键因素.

关键词:
在LAGP中,你会得到很多.晶体结构工程 晶体结构工程能源转换转换能量的转换离子导电性的离子导电性.固态结构是一种固态结构.γ-Al2O3 的使用情况.

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

Published on: December 20, 2016

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

相关实验视频

Last Updated: Jul 11, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

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

Published on: December 20, 2016

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

科学领域:

  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学
  • 固态电池 固态电池是什么

背景情况:

  • 固态电池 (SSLB) 与液体电解质电池相比,提供了更高的安全性和能量密度.
  • 纳西康型酸 (LAGP) 是一个有前途的固体电解质,由于其空气稳定性和电化学窗口.
  • 在LAGP中低离子导电率阻碍了其实际应用.

研究的目的:

  • 为了提高LAGP固体电解质的离子导电性.
  • 为了研究使用不同来源的晶体结构工程.
  • 为了提高固态电池的性能.

主要方法:

  • 使用 γ-Al2O3 而不是 α-Al2O3 作为 LAGP 合成的源.
  • 分析了 γ-Al2O3 对 Al3+ 纳入和 Li+ 度的影响.
  • 通过结构和电化学分析评估了散体和粒度边界导电性的变化.

主要成果:

  • 由于γ-Al2O3的反应性更高,增加了Al3+的纳入LAGP框架.
  • 在M2位点增加了自由Li+度,提高了体积离子导电性.
  • 减少了AlPO4杂质和改善了形态统一性,优化了谷物边界导电性.
  • 在离子导电性方面实现了三倍增强,达到6.04 × 10^-4 S cm^-1 (总) 和2.77 × 10^-3 S cm^-1 (晶体内).

结论:

  • 使用γ-Al2O3的晶体结构工程有效地提高了LAGP的离子导电性.
  • 优化的LAGP显示了先进固态电池应用的巨大潜力.
  • 这一策略为克服当前固体电解质性能限制提供了一条途径.