ISSN 1008-5548

CN 37-1316/TU

最新出版

热电金属有机框架和共价有机框架材料的研究进展

Research progress on thermoelectric metalorganic frameworks and covalent organic frameworks materials


徐骉, 张皖佳, 周子航, 陆晓庆, 李娇, 潘桂龙, 娄悦

南京理工大学 化学与化工学院, 江苏 南京 210094

引用格式:

徐骉, 张皖佳, 周子航, 等 . 热电金属有机框架和共价有机框架材料的研究进展[J]. 中国粉体技术, 2025, 31(1): 62-74. 

XU Biao, ZHANG Wanjia, ZHOU Zihang, et al. Research progress on thermoelectric metalorganic frameworks and covalent organic frameworks materials[J]. China Powder Science and Technology, 2025, 31(1): 62−74.

DOI:10.13732/j.issn.1008-5548.2025.01.006

收稿日期: 2024-07-07, 修回日期: 2024-10-10, 上线日期: 2024-10-18。基金项目: 国家自然科学基金项目,编号:22375093。

第一作者简介: 徐骉(1987—), 男, 教授, 博士, 博士生导师, 国家第十五批“海外高层次人才计划”, 研究方向为纳米热电材料的液相 合成。E-mail:xubiao@njust. edu. cn。

通信作者简介: 娄悦(1992—), 女, 副教授, 博士, 硕士生导师, 江苏省双创博士, 研究方向为纳米热电材料的合成。E-mail:louyue@njust.edu.cn。

摘要:【 目的】 提升金属有机框架(metal-organic frameworks,MOFs)、 共价有机框架(covalent organic frameworks,COFs)及 其复合材料的热电性能,总结 MOFs、 COFs在热电应用方面的研究成果,探讨 MOFs、 COFs改性和热电性能优化方法。 【研究现状】 决定材料热电性能的热电优值的优化须要在塞贝克系数、 电导率和热导率 3个参数之间进行权衡,增大塞 贝克系数通常能够提升热电优值,但可能会导致电导率减小,而增大电导率则可能使得塞贝克系数减小或热导率增大。 通过调控金属离子和配体官能团的类型、 引入具有氧化还原活性或本质导电性的客体分子,可以优化MOFs材料的塞贝 克系数和电导率,并通过增加散射中心来减小热导率。通过调整共价键和连接分子创建不同的电子特性以及化学掺杂, 形成电荷转移复合材料,从而改善COFs的导电性能。【 展望】 未来的研究须要针对MOFs电子与声子输运机制进行计算 与分析,为金属离子和有机连接体的合理选择提供依据;将理论研究与实验设计相结合,通过精确的分子设计制备周期 性长、 缺陷少、 取向好的COFs,促进质量输运和电荷转移,从而不断提高COFs的热电性能; 研发基于MOFs和COFs的柔 性热电器件,实现柔性热电器件在热电领域广泛应用。

关键词: 热电性能; 金属有机框架材料; 共价有机框架材料; 材料设计

Abstract

Significance This review summarizes the latest research progress on functional materials in the field of energy conversion, specifically focusing on metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and their composites. It discusses optimization strategies for the thermoelectric figure of merit (Z), a key parameter that determines the thermoelectric performance of materials, and summarizes the research achievements of MOFs and COFs in thermoelectric applications. The review also explores methods to optimize the thermoelectric properties of MOFs and COFs.

Progress Optimizing the Z value requires balancing three key parameters: the Seebeck coefficient, electrical conductivity, and thermal conductivity. Increasing the Seebeck coefficient generally enhances the Z value, but it can reduce electrical conductivity. Conversely, increasing electrical conductivity may decrease the Seebeck coefficient or increase thermal conductivity. By controlling the types of metal ions and ligand functional groups, and introducing guest molecules with redox activity or inherent conductivity, the Seebeck coefficient and electrical conductivity of MOFs can be optimized. Meanwhile, increasing scattering centers can reduce thermal conductivity. For COFs, improving conductivity can be achieved by adjusting covalent bonds and connecting molecules to create different electronic properties, or through chemical doping to form charge-transfer composites.

Conclusions and Prospects Despite the potential of MOFs and COFs materials, their thermoelectric performance still faces significant challenges due to their relatively low conductivity. The future development of MOFs, COFs, and their composites remains difficult. MOFs possess unique periodicity and porous structures, which help achieve ultra-low thermal conductivity. However, factors such as the size and valence of metal ions, pore size and distribution, structural rigidity, and the impact of guest molecules on thermal conductivity require systematic study. Therefore, calculations and analyses of the electron and phonon transport mechanisms in MOFs are needed to provide a basis for the rational selection of metal ions and organic linkers. Due to the challenges in synthesis and their inherently low conductivity, the thermoelectric properties of COFs have not yet been fully explored. Most studies focus either on the electrical or thermal conductivity of COFs, and much of the research still lack practical applications. Future studies should combine theoretical research with experimental design, using precise molecular design to prepare COFs with high periodicity, fewer defects, and better alignment. This would improve mass transport and charge transfer, continuously enhancing the thermoelectric performance of COFs. The ultimate goal of developing flexible thermoelectric devices based on MOFs and COFs is to enable their widespread applications in thermoelectric field.

Keywords: thermoelectric performance; metal-organic framework materials; covalent organic framework materials; material design

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