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相关概念视频

MOS Capacitor01:25

MOS Capacitor

680
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
680

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相关实验视频

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In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
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循环生成相分离与Si协同增强离子储存能力

Haoyuan Zhu1, Zaoyan Yu1, Yushuai Song1

  • 1Department of Materials, Dalian Maritime University, Dalian, 116026, PR China.

Chemphyschem : a European journal of chemical physics and physical chemistry
|February 3, 2025
PubMed
概括

研究人员开发了一种用于离子电池的新型-金属-有机框架 (Si@Mn-MOF) 复合材料. 这种材料克服了.

关键词:
离子电池是一种离子电池.金属有机框架金属有机框架阶段分离阶段分离.阳极材料是一种阳极材料.

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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
  • 纳米技术 纳米技术

背景情况:

  • 阳极为离子电池 (LIB) 提供高容量,但受到体积扩张和容量色的影响.
  • 固体电解质接口的不稳定性加剧了阳极的性能退化.

研究的目的:

  • 研究基于Mn的金属有机框架 (Mn-MOF) 阶段分离的协同效应,以修改阳极.
  • 提高LIBs中的阳极的电化学性能和循环稳定性.

主要方法:

  • 使用易于自组装的方法,创建了一个Si@Mn-MOF复合材料.
  • 在LIBs中,电化学性能被评估为阳极材料.
  • 在400个循环中评估了循环稳定性和容量保留.

主要成果:

  • 这种Si@Mn-MOF复合材料显示出更好的可逆性和离子储存能力.
  • 在400个循环后,获得了1234.4 mAh g-1的高可逆容量保留.
  • 独特的复合结构有效地缓解了与体积膨胀相关的问题.

结论:

  • Mn-MOF相隔离的协同效应为稳定阳极提供了一个有希望的策略.
  • @Mn-MOF复合材料显示出在高性能LIB中商业应用的潜力.
  • 这种方法提高了下一代电池的耐用性和储能能力.