通过联体效应设计ZnCo-MOF的结构,以提高超级电容器的性能
Kabir Opeyemi Otun1, Ndeye Fatou Diop1, Oladepo Fasakin1
1Department of Physics, Institute of Applied Materials, University of Pretoria 0001 Pretoria South Africa otunkabir2705@gmail.com ncholu.manyala@up.ac.za.
RSC advances
|February 10, 2025
概括
在和金属有机框架 (MOF) 中的连接体工程提高了超级电容器的性能. 基于伊米达的MOF显示出卓越的电荷存储和稳定性,这对于先进的能源设备至关重要.
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:
- 超级电容器的性能在很大程度上取决于金属有机框架 (MOF) 的性能.
- 调整MOF结构,组成和形态是改善能源储存的关键.
研究的目的:
- 为了研究不同连接体对ZnCo-双金属MOFs特性的影响.
- 通过联结体工程优化MOF特性来增强电化学能量储存.
主要方法:
- 使用三种不同的配体 (2-甲基利米达,三酸,2-氨基三酸) 制造ZnCo-双金属MOF.
- 结构性,形态性和电化学性质的表征.
- 组装和测试不对称超级电容器设备.
主要成果:
- 基于伊米达的ZnCo-MOF (ZnCo-MOF-HMIM) 呈现出优异的特异容量 (176.8 mAh g-1 在 1 A g-1 时) 和循环稳定性 (87.5%在 5000 个循环后在 10 A g-1 时保持).
- 一个不对称的装置实现了28.2Wh kg-1的特定能量,并在10,000个循环中保持了80.0%的容量.
- 配方体的选择显著影响了MOF的特性,因N-捐赠原子和协同效应,基于伊米达的MOF表现出更好的性能.
结论:
- 连接体工程是开发超级电容器高性能MOF的关键策略.
- 伊米达连体的特性和协同作用的 Zn-Co 作用有助于提高 ZnCo-MOF-HMIM 的电化学稳定性和电荷储存.
- 这项研究强调了联体选择在用于储能应用的MOF设计中的重要性.
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