相关实验视频

Updated: Sep 8, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

碳点和异质连接的协同效应使Li-Fe-F全固态陶电池具有高阴极负载和累积容量

Hailong Wu^1,2,3, Jiulin Hu^1,2,3, Chilin Li^1,2,3

¹State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, 201899 Shanghai, China. chilinli@mail.sic.ac.cn.

Materials horizons

|August 19, 2025

概括

在ZnOHF复合材料中间层中的碳点 (CD) 和异质连接显著提高了固态电池的性能. 这种方法抑制了树的生长,并增强了实际应用的循环稳定性.

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:

基于石榴石的全固态电池面临着高界面电阻和树生长的挑战.
这些问题阻碍了这些先进的储能系统的实际应用和长期稳定性.

研究的目的:

设计一种新的复合材料中间层,以克服固态电池中的接口电阻和树生长.
为了提高电池组件的离子和电子导电性和结构稳定性.

主要方法:

碳点 (CD) 装饰的ZnOHF复合材料中间层 (ZnOHF@CDs) 的制造.
集成ZnOHF@CD中间层与石榴石固体电解质和Li-Fe-F阴极.
采用热透结合技术进行阴极组装.

主要成果:

该ZnOHF@CD介层通过LiZn/LiF异质连接和CD介导使离子分布和电子扩散均化.
由于固定CD,抑制了树脂的生长,促进了离子通路并减轻了LiZn合金体积变化.
在一个具有低超电位 (∼10 mV) 的石榴石对称电池中,实现了超长周期稳定性 (>14,000 h).
展示了一种具有高FeF3负载和800个周期以上持续容量的Li-Fe-F全固态电池.

结论:

在ZnOHF@CD间层中CD和异质连接的协同效应有效地解决了转换型全固态电池的高可逆性挑战.
这种复合材料间层战略为开发高性能和稳定的固态电池提供了有希望的解决方案.

更多相关视频

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Published on: March 7, 2018

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

相关概念视频

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...

P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...