Xu Guiying, Zhu Chengyao, Gao Guo
Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
Small. 2022 Nov;18(44):e2203140. doi: 10.1002/smll.202203140. Epub 2022 Sep 1.
Metal-organic frameworks (MOFs) with diverse composition, tunable structure, and unique physicochemical properties have emerged as promising materials in various fields. The tunable pore structure, abundant active sites, and ultrahigh specific surface area can facilitate mass transport and provide outstanding capacity, making MOFs an ideal active material for electrochemical energy storage and conversion. However, the poor electrical conductivity of pristine MOFs severely limits their applications in electrochemistry. Developing conductive MOFs has proved to be an effective solution to this problem. This review focuses on the design and synthesis of conductive MOF composites with judiciously chosen conducting materials, pristine MOFs, and assembly methods, as well as the preparation of intrinsically conductive MOFs based on building 2D π-conjugated structures, introducing mixed-valence metal ions/redox-active ligands, designing π-π stacked pathways, and constructing infinite metal-sulfur chains (-M-S-) . Furthermore, recent progress and challenges of conductive MOFs for energy storage and conversion (supercapacitors, Li-ion batteries, Li-S batteries, and electrochemical water splitting) are summarized.
金属有机框架材料（MOFs）具有多样的组成、可调控的结构和独特的物理化学性质，已成为各个领域中颇具前景的材料。其可调控的孔结构、丰富的活性位点以及超高的比表面积能够促进物质传输并提供出色的容量，使MOFs成为电化学能量存储和转换的理想活性材料。然而，原始MOFs较差的电导率严重限制了它们在电化学领域的应用。事实证明，开发导电MOFs是解决这一问题的有效方法。本综述聚焦于通过精心选择导电材料、原始MOFs和组装方法来设计和合成导电MOF复合材料，以及基于构建二维π共轭结构、引入混合价金属离子/氧化还原活性配体、设计π-π堆积路径和构建无限金属-硫链（-M-S-）来制备本征导电MOFs。此外，还总结了导电MOFs在能量存储和转换（超级电容器、锂离子电池、锂硫电池和电化学水分解）方面的最新进展和挑战。
