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相关概念视频

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...
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Electrolysis03:00

Electrolysis

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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
25.9K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

16.7K
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...
16.7K
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.
62.1K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

40.7K
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. 
40.7K
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.0K
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: May 25, 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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先进的高度化物固体电解质使高电压,长周期全固态电池成为可能.

Yu Ye1,2, Zhi Gu1, Jiazhong Geng3

  • 1Future Battery Research Center, Global Institute of Future Technology, Shanghai Jiaotong University, Shanghai 200240, China.

Nano letters
|February 27, 2025
PubMed
概括

这项研究引入了一种新型的高化物固体电解质 (HE-5),用于更安全,高能量的电池. 对于先进的全固态电池来说,它显示出出色的离子导电性和稳定性.

关键词:
所有固态电池都是固态电池.高电压是什么意思 高电压具有高度的高度固态电解质是一种固态电解质.

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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

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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相关实验视频

Last Updated: May 25, 2025

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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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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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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
  • 固态化学 固态化学

背景情况:

  • 稳定的固体电解质对于提高电池的安全性和能量密度至关重要,特别是在高压应用中.
  • 当前的固体电解质在平衡离子导电性与高压稳定性方面面临着挑战.

研究的目的:

  • 设计和合成一种创新的高化物固体电解质 (HE-5) 以提高电池性能.
  • 研究高工程,离子导电性和固体电解质中的电化学稳定性之间的关系.
  • 为了评估HE-5在具有高压阴极的全固态电池 (ASSB) 中的性能.

主要方法:

  • 采用多元元素兴奋剂,制造出一种具有高的化物固体电解质 (HE-5),其成分为Li2.2In0.2Sc0.2Zr0.2Hf0.2Ta0.2Cl6.2.
  • 测量了HE-5的离子导电性和激活能量.
  • 使用HE-5,NCM83阴极和Li-In阳极的全固态电池 (ASSB) 被组装并经过电化学测试.
  • 评估了电化学性能,包括容量保留和在高压下循环稳定性.

主要成果:

  • 合成的HE-5表现出一个混乱的格子结构,促进了离子移动性.
  • 在30°C时达到4.69mS cm-1的离子导电率和0.300 eV的激活能量.
  • 带有HE-5的ASSB显示出出色的电化学性能,在4C速率下在1600个循环中保持70%的容量.
  • 由于高配置稳定了电解质结构,因此在5.0V下实现了稳定的运行.

结论:

  • 高工程有效地提高化物固体电解质的离子导电性和高压稳定性.
  • HE-5为下一代能源密集和安全的全固态电池提供了一个有前途的材料.
  • 这项研究为通过复杂的组成开发先进的固体电解质提供了有价值的路线图.