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相关概念视频

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

27.4K
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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Additive-Derived Surface Modification of Cathodes in All-Solid-State Batteries: The Effect of Lithium Difluorophosphate- and Lithium Difluoro(oxalato)borate-Derived Coating Layers.

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Suppressing Unfavorable Interfacial Reactions Using Polyanionic Oxides as Efficient Buffer Layers: Low-Cost Li<sub>3</sub>PO<sub>4</sub> Coatings for Sulfide-Electrolyte-Based All-Solid-State Batteries.

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Deciphering Physicochemical Properties of Urinary Proteins from Stone Formers as Macromolecular Prolithogenic Factors to Drive Calcium Oxalate Stone Development.

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相关实验视频

Updated: Jul 2, 2025

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
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提高所有固态二次电池的界面稳定性,使用前体基梯度剂.

Yong Jun Ji1, Yong Joon Park1

  • 1Department of Advanced Materials Engineering, Kyonggi University, 154-42, Gwanggyosan-Ro, Yeongtong-Gu, Suwon-Si, Gyeonggi-Do 16227, Republic of Korea.

ACS omega
|February 26, 2024
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概括
此摘要是机器生成的。

使用像Nb2O5这样的低成本氧化物进行染的阴极通过稳定阴极-硫化物电解质接口来提高全固态电池的性能. 这种新的方法提高了容量和循环寿命,为更便宜,高性能电池提供了途径.

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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:

  • 硫化物固态电解质对于所有固态电池 (ASSB) 是至关重要的,因为其具有高离子导电性和易于集成电极.
  • 硫化物电解质的高反应性导致与阴极接口层的形成,阻碍ASSB中的电化学性能.
  • 传统的阴极涂层方法通常依赖于昂贵的材料,限制了成本效益.

研究的目的:

  • 开发一种低成本的策略,以提高ASSB中的阴极-硫化物电解质接口的稳定性.
  • 为了研究使用廉价氧化物 (Nb2O5,Ta2O5,La2O3) 的兴奋剂阴极前体对ASSB性能的影响.
  • 通过梯度兴奋剂来探索改善界面稳定性和电化学性能背后的机制.

主要方法:

  • 在阴极制造前使用低成本氧化物 (Nb2O5,Ta2O5,La2O3) 的阴极前体.
  • 使用扫描电子显微镜 (SEM),传输电子显微镜 (TEM) 和X射线光电子谱学 (XPS) 进行合阴极的表征.
  • 电化学测试用于评估ASSB的放电能力,速率能力,循环性能和阻抗性.

主要成果:

  • 兴奋剂显著提高了放电能力,速率能力和周期性性能,同时降低了阻抗.
  • 鉴定结果显示,在多的阴极中,多剂度概况呈渐变,在表面具有较高的多剂度.
  • Nb和Ta剂减少了阴极混合,增强了离子导电性,并最大限度地减少了阴极-电解质界面的副作用反应,形成了一层保护层.

结论:

  • 用低成本氧化物对阴极进行渐变化是一种有效的策略,可以稳定ASSB中的阴极-硫化物电解质接口.
  • 渐变化形成的保护界面层与传统的表面涂层相似,但成本较低.
  • 这种方法为开发高性能,具有成本效益的ASSB用于可持续储能提供了有希望的方向.