作为优质阴极材料的高导电性的基于Janus Dione的合共价有机框架
Xiaoyi Xu1, Shuoqing Zhang2, Kai Xu1
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, International Research Centre for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
研究人员开发了稳定,导电的共价有机框架 (COF) 用于储能. 在离子电池中实现了创纪录的容量和稳定性.
科学领域:
- 材料科学
- 电化学
- 有机化学
背景情况:
- 导电共价有机框架 (COF) 对于先进的光电子和能量存储至关重要.
- 开发具有高稳定性和导电性的COF仍然是一个重大挑战.
研究的目的:
- 合成和描述具有增强电特性和稳定性的基于Janus二极管的新型COF.
- 评估这些COF作为离子电池中的阴极材料的性能.
主要方法:
- 通过氨酸单元连接的基于Janus二氧化碳的sp2结合COF的合成.
- 电导率,载体移动性和结构性质的表征.
- 作为离子电池中的阴极材料的电化学测试.
主要成果:
- 实现了高电导率 (10−3 S cm−1) 和载体移动性 (7.8 cm2 V−1 s−1).
- 在恶劣条件下表现出极大的强度.
- 在1000次循环后,TFPPy-ICTO-COF提供了338mAhg-1的记录容量.
结论:
- 开发的基于Janus二极管的COF具有显著的稳定性,导电性和电化学性能.
- 这些材料代表了高性能离子电池阴极的重大突破.
- 这项工作扩大了与烯酸结合的COF及其在储能中的应用范围.
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