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相关概念视频

The Electrical Double Layer01:30

The Electrical Double Layer

21
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
21

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具有适应性"固体-液体"界面保护层的金属阳极

Kai Liu, Allen Pei, Hye Ryoung Lee

  • 1Stanford Institute for Materials and Energy Sciences , SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States.

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|March 18, 2017
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概括

一种新型的动态聚合物自适应接口层可以为高能量密度电池提供稳定的金属阳极. 这一突破解决了树的生长和副作用,为实际应用铺平了道路.

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科学领域:

  • 材料科学
  • 电化学
  • 聚合物科学

背景情况:

  • 金属阳极为下一代电池提供高能量密度.
  • 挑战包括固体电解质相间不稳定性,树突增长和Li循环期间的副作用.
  • 这些问题阻碍了金属阳极的实际应用.

研究的目的:

  • 为金属阳极开发一个自适应的接口层.
  • 为了克服静态固体电解质的局限性.
  • 为了实现稳定和实用的金属电池运行.

主要方法:

  • 使用动态交联聚合物
  • 固体-液体
  • 它们的混合行为.
  • 设计了金属阳极的自适应接口层.
  • 研究聚合物对生长动态的反应.

主要成果:

  • 动态聚合物层表现出可逆的
  • 固体-液体
  • 换一个属性.
  • 实现了均的表面覆盖和有效的树突抑制.
  • 启用了金属电极的稳定循环.

结论:

  • 动态交联的聚合物作为金属阳极的优秀适应性接口层.
  • 这种方法成功地解决了金属阳极的内在问题.
  • 工程适应性/电解质接口为先进的电池技术提供了一个有前途的战略.