在水面上合成烯连接的阴离子二维聚合物薄膜作为阳离子选择性电极涂层
Ye Yang1, Davood Sabaghi1, Chang Liu2,3,4
1Center for Advancing Electronics Dresden &, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01069, Dresden, Germany.
Angewandte Chemie (International ed. in English)
|February 29, 2024
概括
研究人员使用水面合成开发了可加工的烯结合酸性二维聚合物 (V-C2DP) 薄膜. 这些薄膜通过提高离子选择性和电池性能来增强基于的双离子电池.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电化学 电化学 电化学
背景情况:
- 乙烯结合二维聚合物 (V-2DPs) 和共价有机框架 (V-2D COFs) 为能源应用提供高π结合和稳定性.
- 目前的合成方法产生了粉末,限制了它们在薄膜设备 (如电池膜) 中的使用.
研究的目的:
- 开发一种合成可加工V-2DP片的方法.
- 研究这些薄膜作为基双离子电池 (ZDIB) 中的离子选择性涂层的使用.
主要方法:
- 在水面上通过Knoevenagel多重凝结合成与乙烯结合的阴离子2DPs (V-C2DPs).
- 制造有控制尺寸和厚度的V-C2DP薄膜.
- 在ZDIB中用V-C2DP薄膜作为电极涂层进行电化学测试.
主要成果:
- 成功合成了面积大,薄,化学稳定的V-C2DP膜 (V-C2DP-1和V-C2DP-2).
- V-C2DP-1薄膜表现出优异的二三甲硫尼尔) 胺离子 (TFSI−) 运输选择性 (t_ = 0.85).
- 加入V-C2DP-1作为涂层显著改善了ZDIB性能,增加了特定容量和循环寿命.
结论:
- 在水面上的合成为可加工的V-2DP片提供了可行的途径.
- V-C2DP 薄膜是高性能 ZDIB 的有效离子选择性涂层.
- 这项工作使V-2DPs能够集成到先进的能量存储设备中.
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