一个离子液体功能化的金属有机框架及其作为离子导电的固体电解质的高性能.
Xiang Kun Cui1, Yu Ding1, Li Feng1
1Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing 100048, China. wancq@cnu.edu.cn.
Dalton transactions (Cambridge, England : 2003)
|November 25, 2024
概括
我们通过将离子液体集成到金属有机框架 (MOF) 中,开发了一种新的晶体固态电解质. 这种材料显示出高离子导电性和高效的离子传输,用于先进的离子电池.
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
- 固态化学 固态化学
背景情况:
- 金属有机框架 (MOF) 作为固态电解质矩阵正在引起人们的兴趣.
- 开发稳定和高性能固态电解质对于下一代离子电池至关重要.
研究的目的:
- 为了合成和表征一种新的基于MOF和离子液体的晶体固态电解质.
- 为了研究该新材料的离子传输特性和电化学性能.
主要方法:
- 离子液体 (MIMS·LiTFSI) 在UiO-67 MOF框架上的共价键.
- 电化学表征,包括在广泛的温度范围内测量离子导电性.
- 使用特征化技术进行结构分析,以了解离子导电路径.
主要成果:
- 晶体ILLi-MOF表现出高的离子导电性 (例如,在30°C时为1.62 × 10-3 S cm-1和在110°C时为1.26 × 10-2 S cm-1).
- 有效的+运输得到了证实,传输数高 (t=0.88).
- 该材料表现出理想的性能,如不易燃性,稳定性和没有泄漏.
结论:
- 在MOF通道内有序排列的离子液体有助于高效的Li+传输.
- 这一综合战略为设计高性能,安全的固态电解质提供了一个有前途的方法.
- 开发的ILLi-MOF为推进离子电池技术提供了一个新的途径.
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