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相关概念视频

Electrolyte and Nonelectrolyte Solutions02:21

Electrolyte and Nonelectrolyte Solutions

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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.
63.9K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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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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Energetics of Solution Formation02:35

Energetics of Solution Formation

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The formation of a solution is an example of a spontaneous process, which is a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Formation of the solution requires the solute–solute and solvent–solvent...
6.8K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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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...
28.0K
Intermolecular Forces in Solutions02:28

Intermolecular Forces in Solutions

34.7K
The formation of a solution is an example of a spontaneous process, a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Such a solution is called an ideal solution. A mixture of ideal gases (or gases such as helium and argon,...
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Aqueous Solutions and Heats of Hydration02:42

Aqueous Solutions and Heats of Hydration

15.0K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
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相关实验视频

Updated: Sep 12, 2025

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

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基于键的深度欧特克斯电解质解决方案用于高温金属电池.

Xiaosheng Song1,2, Yi Zhang1, Zhijie Guo1,3

  • 1Key Laboratory for Special Functional Materials of Ministry of Education, School of Nanoscience and Materials Engineering, Henan University, Kaifeng, 475004, P.R. China.

Angewandte Chemie (International ed. in English)
|August 11, 2025
PubMed
概括

研究人员开发了一种新的Li-bond深电解质 (Li-DEE) 用于高温金属电池 (LMB). 这种Li-DEE增强了离子传输和界面稳定性,使长期循环性能成为可能.

关键词:
深度欧特克斯电解质的电解质.金属的是金属的这是一种Li-bond债券.长期稳定性的长期稳定性具有广泛的温度范围.

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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
  • 储能 储能 储能 储能 储能 储能

背景情况:

  • 高温金属电池 (LMB) 需要稳定的接口和高效的离子传输来实现长期循环.
  • 传统的电解质由于分子极性和强有力的离子相互作用而面临限制,阻碍了性能.

研究的目的:

  • 开发一种用于高温LMB的新型电解质,克服传统系统的局限性.
  • 为了研究Li-bond深度解电解质 (Li-DEE) 的潜力,以提高电池性能.

主要方法:

  • 使用四乙烯酸和二 (硫) 胺基合成了一种Li-DEE.
  • 描述了Li-DEE在高温下的离子导电性和接口特性.
  • 评估了使用Li-DEE的LMB的循环稳定性和容量保留.

主要成果:

  • -DEE表现出快速的离子传输 (6.5 × 10−3 S cm−1 在 100 °C).
  • 形成了一个富含Li3N和LiF的稳定电极接口.
  • 在0.5°C和100°C的1500个循环后,LMB在635个循环中显示了80%的容量保留,在0.5°C和84.4mAhg-1的635个循环中显示了84%的容量保留.

结论:

  • 在Li-DEE中的Li-bond网络促进了高效的离子传输和强大的界面稳定性.
  • -DEE是高温金属电池的一个有前途的电解质.
  • 这项研究为设计用于极端操作条件的先进电解质提供了洞察力.