相关实验视频

Updated: Jul 2, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

机械互锁的介相与能量消耗和快速离子运输,用于高容量的金属电池

Zhangqin Shi¹, Yongming Wang¹, Xinyang Yue¹

¹School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|February 21, 2024

概括

这项研究引入了机械互锁的链网络 (DC-MIN) 进入金属阳极 (LMA) 的人工固体电解质接口 (ASEI). DC-MIN 增强了稳定性和离子传输,使电池能够稳定循环和高速性能.

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
聚合物化学聚合物化学

背景情况:

金属阳极 (LMA) 对于高能电池至关重要,但会受到树形成的影响.
人工固体电解质界面 (ASEI) 可以减轻树突,但机械疲劳仍然是一个挑战.
现有的ASEI往往缺乏承受反复涂/剥离周期的机械强度.

研究的目的:

为金属阳极开发一种机械强大的ASEI.
为了提高金属电池的稳定性和循环寿命.
调查分子设计在ASEI性能中的作用.

主要方法:

合成了一种机械互锁的百合链网络 (DC-MIN),使用乙烯点击化学.
将DC-MIN集成到ASEI结构中,以稳定金属/ASEI接口.
评估了基于DC-MIN的ASEI在对称Li电池和全电池 (LiFePO4和LiNi0.88Co0.09Mn0.03O2阴极) 的电化学性能.

主要成果:

DC-MIN ASEI 显示出出色的机械性能和能量消耗能力.
在1 mA cm-2的稳定2800小时的对称循环中,在一个完整的电池中实现了稳定2800小时的对称循环,以及出色的5C率性能.
一个带有DC-MIN涂层LMA的1Ah袋式电池显示了88%的容量保留,性能优于控制器.

结论:

机械互锁的花链网络 (DC-MIN) 有效地稳定了金属/ASEI接口.
基于DC-MIN的ASEI为提高高能金属电池的安全性和性能提供了一个有希望的策略.
这种分子设计方法为未来的ASEI开发提供了宝贵的见解.

关键词:

金属电池电池的使用情况能量消耗能量消耗快速的离子运输方式机械互锁的网络是机械互锁的固体电解质相间阶段

更多相关视频

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$ 11:25

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

Published on: November 10, 2014

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...

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.