基于金属有机骨架衍生炭应用于电容去离子电极材料的研究进展

A review of metal-organic framework-derived carbon electrode materials for capacitive deionization

  • 摘要: 电容去离子(CDI)技术因低能耗、低成本和低污染等优点被认为是新型的脱盐技术,其中的电极材料是CDI模块的核心部件。理想的电极材料应具有分层的多孔结构、良好的表面特性和优异的电化学性能等特点。金属有机骨架(MOFs)衍生炭因其可控的形貌结构、合适的孔径分布和优异的导电性,成为一种有发展前景的CDI电极材料。本文介绍了CDI技术和MOFs衍生炭的特点,综述了MOFs衍生炭、改性MOFs衍生炭、杂原子掺杂MOFs衍生炭和MOFs衍生炭复合材料在电容去离子电极材料中发展的最新前沿动态,并总结了MOFs衍生炭电极材料应用于CDI技术的优势及其当前面临的挑战。最后,预测了MOFs衍生炭在CDI电极材料的发展趋势。

     

    Abstract: Capacitive deionization (CDI), in which electrode materials play an important role, is considered a novel desalination technology because of its advantages of low energy consumption, low cost and low pollution. Porous electrode materials with a high accessible surface area, hydrophilic surfaces and excellent electrochemical performance have proved to be ideal. Carbons derived from metal-organic frameworks (MOFs) are most suitable for this purpose because of their controllable morphology and microstructure, suitable pore size distribution, and excellent electrical conductivity. The preparation and of MOF-derived carbon materials and their performance for the use as CDI electrode materials are reviewed. These include MOF-derived carbons, modified MOF-derived carbons, doped MOF-derived carbons and MOF-derived carbon composites with graphene, carbon nanofibers and carbon nanotubes. The advantages and challenges of these carbon electrode materials for CDI are summarized and future development is proposed.

     

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