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Batteries and Fuel Cells

Batteries and Fuel Cells

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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Updated: Jul 5, 2025

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

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具有超稳定循环能力的固态电池:一种内部-外部修改策略

Linshan Luo¹, Zhefei Sun², Yiwei You¹

¹Key Laboratory of Low Dimensional Condensed Matter Physics (Department of Education of Fujian Province), College of Physical Science and Technology, Xiamen University, Xiamen 361005, China.

|January 15, 2024

概括

此摘要是机器生成的。

通过引入双重修改策略,本研究通过解决酸 (LATP) 的缺陷并保护金属阳极来稳定离子电池接口. 这提高了电池的寿命和在苛刻条件下的性能.

关键词:

LiClCl LiClCl 的使用方法缺陷是一个缺陷.阶段间的阶段间.二二二二二二二二固体聚合物电解质的电解质

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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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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
固态电池固态电池是什么

背景情况:

酸 (LATP) 固体电解质和金属阳极之间的接口存在稳定性挑战,限制了电池的性能.
现有的间层策略在长期循环和高电流密度方面表现出有限的有效性,原因是未解决的内部LATP缺陷,如谷物边界 (GB).
在LATP中的颗粒边界表现出更高的电子导电性,促进与的有害副作用反应.

研究的目的:

为了研究LATP粒度边界在与金属的界面不稳定性中的作用.
为稳定LATP/接口制定双重修改策略.
为了提高固态金属电池的循环稳定性和安全性.

主要方法:

控制实验和理论计算来分析LATP谷物边界特性.
液化溶液浸泡方法来修改颗粒边界电子状态.
复合固体聚合物电解质 (CSPE) 在Li/LATP接口上交叠.
改造对称电池的制造和电化学测试.

主要成果:

液化处理有效地改变了LATP颗粒边界,减少了它们的电子导电性和与的副作用反应.
结合LiCl处理和CSPE间层,为LATP电解质提供了内部和外部的保护.
修改后的细胞表现出超稳定的循环性能,在0.4 mA cm-2下超过3500小时,在0.6 mA cm-2下超过1500小时.
双重修饰策略有效地抑制了电子泄漏,防止了副作用,并抑制了树的透.

结论:

解决内部缺陷,特别是粒度边界,对于稳定LATP电解质至关重要.
结合LiCl处理和CSPE间层的双修饰方法为界面稳定提供了一个非常有效的策略.
这种方法显著提高了固态金属电池的长期循环性能和可靠性.