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2D Redox‐Active Covalent Organic Frameworks for Supercapacitors: Design, Synthesis, and Challenges
Author(s) -
Li Miao,
Liu Jingjuan,
Zhang Ting,
Song Xiaoyu,
Chen Weihua,
Chen Long
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202005073
Subject(s) - redox , supercapacitor , nanotechnology , materials science , covalent bond , electrolyte , chemistry , electrode , electrochemistry , organic chemistry , metallurgy
Due to the tunable skeletons, variable pore environments, and predesignable structures, covalent organic frameworks (COFs) can be served as a versatile platform to tailor redox activities for efficient energy storage. Redox‐active COFs with specific functional groups can not only promote high‐speed mass transport in the permanently open channels, but also provide dense active sites for reversible redox reactions so as to efficiently adsorb the electrolyte ions, thus becoming emerging and promising electroactive materials. This review summarizes the design principles and synthetic methods of redox‐active COFs, with a focus on surveying the representative advances in supercapacitors. The key progress, major challenges, and future directions in this promising field are highlighted as well.