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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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Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
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对于全固态电池而言,一种高导电性圆柱体阴极.

Julian F Baumgärtner1,2, Daniel Isler1,2, Hung Quoc Nguyen3

  • 1Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland.

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此摘要是机器生成的。

与铁基Li2-xFeCl4 (LFC) 一样,旋为高功率的离子电池提供了优越的导电性. 这项研究突出了LFC的重点.

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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:

  • 高功率的离子电池 (LIB) 需要具有出色的离子和电子导电性的正极活性材料 (CAM).
  • 氧脊柱是常用的CAM,但在运输特性方面存在局限性.
  • 需要先进的CAM,利用地球上丰富的元素.

研究的目的:

  • 为了研究haloospinels作为一个新的类型的CAMs为LIBs.
  • 为了证明基于铁的旋对提高电池性能的潜力.
  • 探索使用Li2-xFeCl4 (LFC) 作为全固态电池 (ASSB) 中的模型CAM.

主要方法:

  • 合成和描述旋转型Li2-xFeCl4 (LFC) 的情况.
  • 使用微米大小的LFC粒子制造阴极.
  • 在完全固态电池配置中对LFC进行电化学测试.
  • 对LFC的离子和电子导电性的评估.

主要成果:

  • 相比于oxospinels,Halospinels具有显著增强的离子和电子传输特性.
  • 液晶电流表现出高离子-电子导电性,使其能够有效地传输离子和电子.
  • 用微米大小的LFC颗粒制造的阴极在实际电流密度 (0.5 mA cm-2) 中实现了高面积容量 (>2 mA h cm-2).
  • 对于基于LFC的ASSB,观察到超过200个周期的稳定循环性能.

结论:

  • Li2-xFeCl4 (LFC) 是高性能LIBs的一个有前途的阴极活性材料.
  • 旋为传统的氧旋提供了一种可行的替代方案,使得地球上丰富的金属如铁的使用成为可能.
  • 这些发现为具有成本效益和高性能全固态电池铺平了道路.