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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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Ionic Bonding and Electron Transfer02:48

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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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相关实验视频

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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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一个动态稳定的混合导电介面,用于全固态金属电池.

Shuai Li1, Shi-Jie Yang1, Gui-Xian Liu2

  • 1Advanced Research Institute of Multidisciplinary Science, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Advanced materials (Deerfield Beach, Fla.)
|October 18, 2023
PubMed
概括
此摘要是机器生成的。

一个新的自我修复介面 (S-MCI) 增强了全固态金属电池中硫化物固体电解质的稳定性. 这一突破改善了离子传输和电池寿命,以实现更安全,高密度的能量存储.

关键词:
的树石形成.金属阳极是一种金属阳极.完全固态的金属电池是完全固态的.混合导电的相间导体.硫化物电解质 硫化物电解质

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相关实验视频

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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:

  • 具有硫化物电解质的全固态金属电池 (ASSLMB) 提供高安全性和能量密度.
  • 在金属硫化物电解质接口的不稳定性形成无能接口 (SEI,MCI),阻碍离子运输和电池性能.

研究的目的:

  • 开发一个动态稳定的混合导电介面 (S-MCI),以提高金属与复合硫化物电解质的兼容性.
  • 解决ASSLMB中的接口退化和不均的沉积问题.

主要方法:

  • 在现场应力自我限制反应产生S-MCI.
  • 使用复合电解质 (Li6PS5Cl和Li10GeP2S12),在电解质分解应力限制进一步分解的情况下.
  • 描述S-MCI的稳定性和性特性.

主要成果:

  • S-MCI表现出高动态稳定性和电亲和性,结合了LPSCl衍生的SEI和LGPS衍生的MCI的优势.
  • 立体二氧化对称细胞保持稳定的运行1500小时.
  • 在100个循环后,NCM622全电池实现了93.7%的容量保留.

结论:

  • 该S-MCI有效地稳定了金属硫化物电解质接口.
  • 该策略为在高性能ASSLMB中构建稳定接口提供了一种新方法.
  • 这些发现为先进,更安全的固态电池铺平了道路.