一个金属有机框架与混合电子捐赠者TFT和电子受体NDI联体,用于高性能混合离子电容器
Jun-Die Zhang1, Ruo-Nan Wang1, Wei Liu1
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
Inorganic chemistry
|March 13, 2025
概括
一种新的金属有机框架 (MOF) 与混合电子供体和受体连接体增强混合离子电容器 (HLIC) 阳极性能. 这种MOF提供高能量和功率密度,具有稳定的循环,用于先进的能量存储.
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
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOF) 为储能应用提供可调节的性能.
- 混合离子电容器 (HLIC) 需要先进的阳极材料来提高性能.
- 在MOF中整合混合电子供体 (D) 和受体 (A) 配体是HLIC未充分探索的策略.
研究的目的:
- 为HLIC阳极构建和表征一种新型的MOF,使用混合的D/A联体.
- 在HLIC中研究合成的MOF的伪电容阳极性能.
- 了解控制电化学性能的结构属性关系.
主要方法:
- 使用特定的电子供体和受体配体合成Zn-TTF/NDI MOF.
- 结晶学表征以确定2D协调网络和3D超分子组合.
- 在HLIC中测试MOF作为伪电容阳极的电化学测试.
主要成果:
- 成功合成了一种具有3D超分子结构的2DMOF.
- MOF展示了丰富的活性点,优良的电荷导电性和开放的离子传输通道.
- 基于MOF的HLIC实现了133.7 Wh kg-1的最大特异能和12.9 kW kg-1.1的高特异功率.
- 观察到稳定的循环性能,归因于协同效应和结构稳定性.
结论:
- 在MOF中混合D/A连接体策略对于HLIC阳极开发非常有效.
- 合成的Zn-TTF/NDI MOF由于其独特的结构和电子特性,表现出卓越的电化学性能.
- 这项工作突显了MOF在下一代高性能储能设备中的潜力.
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