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相关概念视频

Ionic Crystal Structures02:42

Ionic Crystal Structures

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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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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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Acid Halides to Alcohols: LiAlH4 Reduction01:19

Acid Halides to Alcohols: LiAlH4 Reduction

2.9K
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
2.9K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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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...
17.2K
Metallic Solids02:37

Metallic Solids

18.5K
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 malleability....
18.5K
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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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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全固态电池的化物固态电解质:结构设计,合成,环境稳定性,接口优化和挑战.

Boran Tao1,2, Dailin Zhong1, Hongda Li1,2

  • 1Liuzhou Key Laboratory of New-Energy Vehicle Lithium Battery, School of Electronic Engineering, Guangxi University of Science and Technology Liuzhou 545006 China.

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概括
此摘要是机器生成的。

化物固态电解质 (SSEs) 为所有固态电池 (ASSB) 提供了平衡的性能. 具有单临床结构的基材料显示出高离子导电性和稳定性的前景.

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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:

  • 化物固态电解质 (SSEs) 已成为全固态电池 (ASSB) 中液态电解质的有希望的替代品.
  • 与氧化物和硫化物SSE相比,化物SSE在离子导电性,电化学稳定性和防潮性方面表现出优越的平衡.
  • 自2018年以来的重大研究进步引发了对下一代储能化物SSEs的兴趣.

研究的目的:

  • 提供化物SSEs的全面概述,重点关注它们的基本原则,结构设计和ASSB中的实际应用.
  • 阐明控制化物SSE组件选择及其结构优化以提高离子导电性的关键因素.
  • 分析耐湿性机制,并探索化物SSEs可扩展的合成方法.

主要方法:

  • 基于电子负性和离子性质的组件选,偏好化物离子和特定元素,如Sc,Y和化物.
  • 结构分析,确定单临床结构是最优的离子迁移与三角形和正角形相比.
  • 探索替代策略,包括双素,同价和价子替代,以调整电解质特性.
  • 研究耐湿性机制和合成技术,重点关注可扩展性的湿化学方法.

主要成果:

  • 化物离子表现出极好的离子导电性和电化学稳定性,使它们成为理想的SSE组件.
  • 单晶晶体结构促进了高效的离子运输,这对于高电池性能至关重要.
  • 湿化学合成方法被认为比固态或机械化学方法更适合大规模生产化物SSEs.
  • 替代策略为ASSB应用优化化物SSE提供可调节的特性.

结论:

  • 化物SSEs,特别是结构优化的化物基化合物,为开发高性能ASSB提供了可行的途径.
  • 了解组件选择,结构设计和合成方法对于推进化物SSE技术至关重要.
  • 对应用前景和挑战进行进一步的研究是必要的,以实现化物SSEs在商业ASSB中的全部潜力.