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相关概念视频

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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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通过粉末原子层沉积的组成控制的阴极保护层,用于全固态电池.

Kyu Moon Kwon1, Dae Ho Kim1, Ha Yeon Kwon1

  • 1Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, South Korea.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|October 14, 2025
PubMed
概括

控制全固态电池 (ASSB) 的保护层组成是关键. 在正极活性材料上定制氧化层可提高离子和电子导电性,提高电池性能和稳定性.

关键词:
所有固态电池都是固态电池.原子层沉积的原子层沉积.阴极保护层是阴极的保护层.氧化氧化氧化.在粉末中ALDALD.

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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
  • 电池技术 电池技术

背景情况:

  • 在全固态电池 (ASSB) 中,阴极活性材料 (CAM) 和硫化物固体电解质之间的稳定接口至关重要.
  • 控制CAM上的保护层的离子和电子导电性对于界面稳定至关重要.

研究的目的:

  • 为了研究不同氧化成分对CAM的保护层的影响.
  • 为了确定保护层组成和ASSB性能之间的定量相关性.

主要方法:

  • 原子层沉积 (ALD) 使用O3在LiNi0.8Co0.1Mn0.1O2.2上生长氧化层.
  • 保护层的离子和电子导电性的表征.
  • 在ASSB中对涂层和未涂层CAM进行电化学性能测试.

主要成果:

  • 氧化层的离子导电性在25°C时达到2.20 × 10^-7 S cm^-1.
  • 电子导电率在10^-10到10^-7 S cm^-1之间,根据组成而有所不同.
  • 与未涂层相比,涂层CAM的初始库伦比克效率增加了6.7%,容量保留率增加了43%.

结论:

  • 保护层的组成显著影响离子和电子传输特性.
  • 保护层的组成控制是硫化物基ASSB的接口工程的一个关键策略.
  • 优化的保护层提高了ASSB的电化学性能和长期稳定性.