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相关概念视频

Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

24.2K
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:
24.2K

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相关实验视频

Updated: Sep 10, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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在LaCl3基固体电解质中优化离子扩散通路,通过阴离子空位调制.

Yongmei Zhou1, Zhenyang Shen1, Pengfei Du1

  • 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)
|August 19, 2025
PubMed
概括
此摘要是机器生成的。

研究人员通过引入离子空缺并调整LiCl含量,创建了一个3D离子扩散网络. 这提高了新材料中的离子导电性,为更好的电池铺平了道路.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 固态化学 固态化学
  • 电化学 电化学 电化学

背景情况:

  • 1D材料中的离子扩散通道限制导电性.
  • 开发高效的离子扩散通路对于先进的能量存储至关重要.

研究的目的:

  • 设计一个三维 (3D) 离子扩散网络.
  • 在新材料中增强离子导电性.

主要方法:

  • 控制引入兰现场的空缺职位.
  • 固定的In:La 摩尔比为 1:2.
  • 调整LiCl含量以增加Li+度.

主要成果:

  • 成功构建了一个3D离子扩散网络,克服了1D通道的限制.
  • 优化的Li3.6La3.2In1.6Cl18样本在30°C时实现了0.17 mS cm-1的导电性.
  • 记录了0.484 eV的低迁移激活能量.

结论:

  • 开发的材料显示了显著改善的离子传输.
  • 这种方法为设计高性能固体电解质提供了一个有希望的策略.
  • 这些发现有助于推进固态电池技术的发展.