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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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Weak Acid Solutions04:02

Weak Acid Solutions

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Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
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Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
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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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Metallic Solids02:37

Metallic Solids

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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....
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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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石榴型固态电解质,具有针对性兼容性,用于高性能全固态电池.

Yang Zhang1, Shuhan Wang1, Kai Wan2

  • 1College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, 610059, P. R. China.

Advanced materials (Deerfield Beach, Fla.)
|December 10, 2025
PubMed
概括
此摘要是机器生成的。

这项研究开发了新的石榴石固态电解质 (LLZSOF),具有改进的金属兼容性. 这些电解质在全固态电池中表现出色,为可扩展的应用铺平了道路.

关键词:
所有固态电池都是固态电池.石榴石类型的固体电解质.接口接触的接口接触减速稳定性的降低.

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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:

  • 石榴石型Li7La3Zr2O12 (LLZO) 固态电解质 (SSEs) 为所有固态电池提供高离子导电性.
  • 在实际的电池部署中,LLZO和金属电极之间的界面兼容性仍然是一个挑战.

研究的目的:

  • 设计和合成具有增强金属兼容性的新型石榴石型SSE (Li7La3Zr2-xScxO12-xFx,LLZSOF).
  • 调查和兴奋剂对LLZO结构,电化学和界面特性的影响.

主要方法:

  • 合成具有不同Sc和F含量的LLZSOF材料 (x = 0-0.20).
  • 结晶结构,离子导电性和电化学稳定性的表征.
  • 对称电池和全固态金属电池 (ASLMB) 的制造和测试.

主要成果:

  • 优化的LLZSOF-0.15组合表现出与金属的强烈接口接触,抑制了Li+/H+交换.
  • 替代扫增加了含量,并改善了还原稳定性.
  • 基于LLZSOF-0.15的对称电池实现了1.9 mA cm-2.2的临界电流密度.
  • 使用LLZSOF-0.15的ASLMB表现出极好的循环性,对LiFePO4和NCM阴极保持高容量.
  • 在120个循环中,囊细胞表现出高的库伦比克效率 (>99.5%) 和容量保留 (>94.9%).

结论:

  • 开发的LLZSOF SSE具有与金属电极的卓越界面兼容性.
  • 这种材料设计方法促进了用于可扩展全固态电池应用的先进石榴SSE的开发.