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相关概念视频

Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

41.7K
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. 
41.7K
Ionic Bonds00:42

Ionic Bonds

118.6K
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...
118.6K
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

24.0K
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:
24.0K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

286
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
286
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.4K
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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相关实验视频

Updated: Jul 19, 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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固体电解质界面架构,用于稳定的电解质界面.

Yue Pan1, Ying Zhang2

  • 1School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, 221018, P. R. China.

Chemistry, an Asian journal
|August 11, 2023
PubMed
概括
此摘要是机器生成的。

人工固体电解质交相 (SEI) 工程是克服树突和金属电池中的副作用的关键. 本综述详细介绍了创建稳定,导电性人工SEI层以提高电池性能的策略.

关键词:
李树突是李树突的组成部分.金属阳极是一种金属阳极.一个SEI设计设计.人工SEII是一种人工SEI.

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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
  • 电池技术 电池技术

背景情况:

  • 金属阳极具有很高的理论容量,非常适合下一代电池.
  • 商业化受阻的是树矿的形成和电解质副作用.
  • 优化的固体电解质间相 (SEI) 对于稳定的金属电池运行至关重要.

研究的目的:

  • 审查金属电池中人工SEI工程的战略.
  • 突出组件,分布和结构在人工SEI设计中的重要性.
  • 为未来的SEI开发和金属电池研究提供前景.

主要方法:

  • 总结了液体和固体电解质的人工SEI制造策略.
  • 分析SEI特性 (稳定性,导电性,紧性,灵活性) 对性能的影响.
  • 审查关于人工SEI工程的现有文献.

主要成果:

  • 人工SEI可以有效地抑制树突和副作用.
  • 优化的人工SEI表现出增强的稳定性,离子导电性,紧性和灵活性.
  • 仔细考虑SEI组件,分布和结构对于理想的性能至关重要.

结论:

  • 人工SEI工程是一种有前途的方法,可以实现高性能金属电池.
  • 对合理的SEI设计的进一步研究将加速先进的储能解决方案的开发.
  • 这一综述为未来金属电池技术的进步提供了基础.