相关实验视频

Updated: May 27, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

聚合物电解质的混合功能:实现高性能全固态金属电池的新视野

Yufeng Ren¹, Suli Chen¹, Mateusz Odziomek²

¹The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.

Angewandte Chemie (International ed. in English)

|February 20, 2025

概括

我们开发了一种新的聚合物电解质,用于固态电池. 这种材料增强了离子运动和机械强度,使电池能够稳定,无树的电池循环.

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:

固体聚合物电解质 (SPEs) 对于全固态金属电池 (ASSLMB) 是至关重要的.
一个关键的挑战是同时提高 Li+ 离子迁移和 SPEs 的机械强度.
现有的SPE经常面临导电性和结构完整性的限制.

研究的目的:

引入一种新型的超分子组织,交联聚合物电解质 (PCPE).
为ASSLMBs增强SPEs的离子导电性和机械性能.
研究多臂含量寡合体 (MBO) 在修改SPE特性的作用.

主要方法:

通过将MBO固体塑化剂纳入聚乙烯氧化物 (PEO) -盐基质中来合成PCPE.
研究了MBO中的位和盐离子之间的易斯酸相互作用.
分析了由此产生的高分子聚合物网络结构及其对离子运输和机械性能的影响.

主要成果:

MBO-盐相互作用创造了一个无形子相,纳米通道促进了快速的Li+运输.
由MBO和PEO组成的超分子网络提高了机械强度,并提供了相互连接的离子通路.
PCPE表现出增强的离子导电性,优越的机械性能和更好的薄膜稳定性.
在Li/Li对称细胞中经过2600多小时的无树脂循环.
在高容量的ASSLMB中实现了优异的电化学性能.

结论:

开发的PCPE有效地解决了SPE中的离子导电性和机械强度之间的权衡问题.
通过MBO进行超分子组织是为ASSLMB设计先进电解质的有希望的策略.
在PCPE显示显著的潜力,使安全和高性能固态电池.

关键词:

全固态金属电池完全固态金属电池离子迁移运动学离子迁移运动学机械性质机械性质聚合物电解质聚合物电解质拓交叉链接拓交叉链接

更多相关视频

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

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...

Electrolysis

Electrolysis

In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...