缺陷的共价有机框架的功能化,用于高性能固态电解质
Senjie Mi1, Yayun Geng1, Yinggu Wang2
1School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 9, 2025
概括
具有可调节的离子和电子吸收组的新型共价有机框架 (COF) 提高了固态电解质的性能. 这一突破为开发先进的离子电池提供了一种多功能方法.
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:
- 共价有机框架 (COF) 对于固态电解质是有前途的,因为它们的调节性结构和稳定性.
- 提高COF中的离子导电性需要结合离子和电子吸收组,这是一个挑战.
研究的目的:
- 开发一种用于合成固态电解质的功能性COF的多功能方法.
- 研究离子组和电子吸收单元对离子导电性的协同效应.
主要方法:
- 合成新型 [3+3] 缺陷的COF与活跃的定点进行后修改.
- 离子/离子组和电子吸收单元的调节,以调节离子导电性.
主要成果:
- COF-ECJTU1-60-SO3Li固态电解质在303 K的温度下实现了1.30 × 10-5 S cm-1的离子导电性和0.87的高Li+转移数 (tLi+).
- 一个Li/COF-ECJTU1-60-SO3Li/LiFePO4固体离子电池表现出色,包括145.7mAhg-1初始容量和92.71%的容量保留在353K的100个周期后.
结论:
- 介绍了一种用于构建功能性COF的新方法.
- 这项研究系统地探索了离子组和电子吸收单位之间的协同作用.
- 开发的COF可以创建高性能固态电解质和电池.
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