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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...
14.2K

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相关实验视频

Updated: Jun 12, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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结构法规使丰富单晶阴极具有高接口功能.

Pei Liu1, Haoran Wei1, Tao Huang2

  • 1Graphene Composite Research Center, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.

ACS applied materials & interfaces
|September 24, 2024
PubMed
概括

修饰通过防止裂和改善离子扩散来稳定富含Ni的单晶阴极 (SC-NMC83). 这提高了电池的性能,为全固态电池等先进的储能解决方案提供了一个有前途的战略.

关键词:
富含的阴极是什么工程 CEI CEI 工程 CEI 工程 CEI 工程 CEI低迁移能量屏障的能量障碍.结构稳定性 结构稳定性伊的修饰方式是伊.

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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:

  • 富含的单晶分层阴极提供高能量密度,但遭受容量降解.
  • 格子应变和界面副作用反应是其实际应用中的关键挑战.

研究的目的:

  • 使用改性来稳定富含的单晶LiNi0.83Mn0.05Co0.12O2 (SC-NMC83) 的结构.
  • 为了减轻容量退化,并提高这些正极材料的电化学性能.

主要方法:

  • 在SC-NMC83.3上采用了一种有效的伊改性方法.
  • 研究了改性材料的结构稳定和离子扩散特性.

主要成果:

  • 修饰成功固定了氧气,防止了SC-NMC83.3中的裂形成.
  • 与未经修改的样本 (76.1%) 相比,用修改的样本 (SC-NMC83-Y) 显示了显著改善的容量保留 (90%在100个循环后).
  • 扩大了Li+离子的扩散路径,提高了整体性能.

结论:

  • 兴奋剂是一种有前途的策略,可以提高富含Ni的单晶阴极的稳定性和性能.
  • 这种方法为实际应用铺平了道路,包括在全固态电池中.