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相关概念视频

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

26.9K
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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Ionic Crystal Structures02:42

Ionic Crystal Structures

14.1K
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...
14.1K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

66.3K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
66.3K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

41.2K
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. 
41.2K
Ionic Bonds00:42

Ionic Bonds

117.9K
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...
117.9K
Electrolysis03:00

Electrolysis

25.9K
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

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相关实验视频

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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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向固态电池使用酸酸电解质.

Lasse N Skov1, Jakob B Grinderslev1, Therese S S Kjær1

  • 1Interdisciplinary Nanoscience Center (iNANO) and, Department of Chemistry, Aarhus University, Langelandsgade 140, 8000, Aarhus C, Denmark.

Angewandte Chemie (International ed. in English)
|January 28, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新型的固体基酸电解质,用于更安全,更便宜的电能存储. 这种新材料具有高离子导电性和对固态电池的良好稳定性.

关键词:
电池 电池 电池电解质是的电解质.含的酸酸盐是什么?涂层是一种涂层.固体电解质是一种固体电解质.

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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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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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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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:

  • 固态电池提供了比传统离子电池更安全,更便宜的替代品.
  • 像这样丰富的元素对于可持续的储能解决方案是可取的.
  • 开发高效的固体电解质对于推进固态电池技术至关重要.

研究的目的:

  • 报告一种具有高离子导电性的新型固体酸盐电解质.
  • 为了研究促进离子运输的结构性质.
  • 为了证明固态电池电解质的电化学性能.

主要方法:

  • 酸酸电解质 (Ca(BH4) 2·2NH2CH3) 的合成和表征.
  • 在不同温度下测量离子导电性.
  • 电化学电池的制造和测试 (Ca
  • 使用扫描电子显微镜 (SEM) 和能量分散式X射线光谱 (EDS) 的电极表面分析.
  • 使用CaxSn和Sn电极进行三电极电池测试,以提高可逆性.

主要成果:

  • 这种新型电解质在70°C时具有高离子导电性 (σ(Ca2+) ~10−5 S cm−1).
  • 该材料具有开放的,灵活的结构,具有弱的二键,促进Ca2+离子迁移.
  • 证实了高离子输送数 (t_ion = 0.9916) 和低电子导电性.
  • 在三电极配置中实现了可逆涂层和剥离.

结论:

  • 开发的固体基酸盐电解质对固态电池显示出重大前景.
  • 它的特性使得有效和稳定的离子运输成为可能.
  • 这种材料有助于开发更便宜,更安全的电能存储系统.