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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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Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
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离子导电分散剂使得可扩展的湿处理复合电极能够用于高性能全固态电池.

Eunhyuk Choi1, Seung Woo Nam1, Dongkyu Lee1

  • 1School of Mechanical Engineering, Korea University, Seoul, Republic of Korea.

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概括

研究人员开发了一种离子导电分散剂,二氧化硫酸 (Li-AOT),用于全固态电池 (ASSB). 这一突破使密集复合电极的可扩展制造成为可能,提高了电池的性能和安全性.

关键词:
所有固态电池都是固态电池.复合电极是一种复合电极.离子导电分散剂是一种离子导电分散剂.基于泥的湿加工.

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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:

  • 全固态电池 (ASSB) 与离子电池相比,提供更高的安全性和能量密度.
  • 密集复合电极的可扩展制造是ASSB商业化的一个关键瓶.
  • 现有的方法难以平衡电极密度,离子导电性和电子透.

研究的目的:

  • 为硫化物基复合电极引入一种新的离子导电分散剂策略.
  • 为了证明二甲基硫酸盐 (Li-AOT) 作为离子导电分散剂的有效性.
  • 为了实现可扩展的基于泥的加工,用于高性能ASSB.

主要方法:

  • 设计和合成具有特定头组和链特性的Li-AOT.
  • 描述Li-AOT的可溶性,对硫化物电解质的亲和力,以及对离子导电性的影响.
  • 使用Li-AOT的高负荷复合材料正极的制造和电化学测试.

主要成果:

  • 与传统的表面活性剂不同,Li-AOT可以集成到Li+导电网络中.
  • 它通过均的碳纳米管分散增强电子透.
  • 实现了密集的,空虚薄的微结构,降低了界面阻力和极化.
  • 在高负荷复合阴极 (20 mg cm-2) 中证明了提高速率的能力.

结论:

  • -AOT 作为硫化物基复合电极的有效离子导电分散剂.
  • 这一战略为基于泥的ASSB的湿处理提供了一个可扩展的途径.
  • 开发的设计范式为未来的ASSB电极开发提供了可概括的方法.