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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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MOS Capacitor01:25

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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...
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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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基于PEO的固体复合聚合物电解质用于高容量保留全固态金属电池.

Kashif Khan1,2, Muhammad Bilal Hanif3, Hu Xin2

  • 1Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang, 313001, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)
|September 15, 2023
PubMed
概括

这项研究增强了用于高能金属电池的混合填充剂的聚乙烯氧化物固体聚合物电解质. 新的电解质显示出更好的导电性和稳定性,使电池性能能够持续很长时间.

关键词:
全固态金属电池完全固态金属电池混合填充剂混合填充剂离子导电性的离子导电性聚乙烯氧化物聚乙烯氧化物固体聚合物电解质的电解质.

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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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
  • 聚合物科学 聚合物科学

背景情况:

  • 聚乙烯氧化物 (PEO) 固体聚合物电解质 (SPEs) 为高能金属电池提供有限的离子导电性和电化学稳定性.
  • 石榴类型Li6.4 La3 Zr1.4 Ta0.6 O12 (LLZTO) 是一个有前途的填充物,但在PEO SPEs中受到高界面电阻的影响.

研究的目的:

  • 开发一种新的混合填充剂设计的SPE,以提高金属电池的性能.
  • 克服PEO和LLZTO在实现高离子导电性和电化学稳定性方面的局限性.

主要方法:

  • 制造一种固体复合膜,将混合填充剂纳入以PEO为基础的SPE.
  • 电化学表征包括离子导电性,Li+转移数和循环稳定性测试.
  • 组装和测试Li/Li对称电池和LiFePO4/Li电池.

主要成果:

  • 在40°C时达到1.9×10−4S cm−1的最大离子导电率和0.67的Li+转移数.
  • 在0.1 mA cm-2的Li/Li对称细胞中,经过2000小时的稳定循环.
  • 在1°C下提供159.2mAh高速容量,在LiFePO/Li电池的400个循环后保持95.2%.

结论:

  • 混合填充剂策略有效地提高了基于PEO的SPEs的电化学性能.
  • 开发的SPEs适用于高性能全固态金属电池.
  • 这种方法为推进下一代储能解决方案提供了可行的途径.