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相关概念视频

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...
14.0K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

16.6K
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...
16.6K
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

23.5K
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:
23.5K
Metallic Solids02:37

Metallic Solids

18.1K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
18.1K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

39.9K
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. 
39.9K
Ionic Strength: Effects on Chemical Equilibria01:19

Ionic Strength: Effects on Chemical Equilibria

1.3K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
1.3K

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相关实验视频

Updated: May 16, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

21.6K

干扰驱动的无烧结的石榴型固体电解质.

Giyun Kwon1, Hyeokjo Gwon2, Youngjoon Bae3

  • 1Battery Material Technical Unit, Material Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co. Ltd., Suwon, Republic of Korea. giyun.kwon@samsung.com.

Nature communications
|April 5, 2025
PubMed
概括
此摘要是机器生成的。

我们开发了一种新的低温方法,用于为金属电池制造石榴石固体电解质. 这种无烧结的方法提高了材料的可靠性,并使更薄的电解质膜能够商业化.

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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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相关实验视频

Last Updated: May 16, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
05:33

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

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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:

  • 用于金属电池的氧化陶电解质的高温加工可能会导致材料降解.
  • 合成石榴电解质的传统方法需要高温 (>1100°C),这限制了它们的实际应用.

研究的目的:

  • 为了引入一种无序的,无烧结的合成路径,用于石榴石类固体电解质.
  • 为了使可靠和薄的固体电解质膜用于高能金属电池的制造.

主要方法:

  • 从无序的基础材料中创建一个无形矩阵.
  • 在500°C的单步温和热处理以诱导结晶.
  • 机械性能和离子导电性的表征.

主要成果:

  • 在降低 350°C 的温度下实现立方相石榴石形成.
  • 在25°C时获得了1.8 × 10-4 S/cm的Li+离子导电性.
  • 证明了软化机械性能 (产压 = 359.8 MPa),促进了密集矩阵的形成.

结论:

  • 干扰驱动的石榴石固体电解质的电化学性能与传统烧结电解质相美.
  • 这种无烧结的方法克服了高温加工的局限性,促进了基于氧化物的金属电池的商业化.
  • 该方法有助于生产均,薄,宽的固体电解质膜.