Covalent organic frameworks (COFs), materials constructed from organic building blocks joined by robust covalent bonds, have emerged as attractive materials in the context of electrochemical applications because of their high, intrinsic porosities and crystalline frameworks, as well as their ability to be tuned across two- and three-dimensions by the judicious selection of building blocks. Because of the recent and rapid development of this field, we have summarized COFs employed for electrochemical applications, such as batteries and capacitors, water splitting, solar cells, and sensors, with an emphasis on the structural design and resulting performance of the targeted electrochemical system. Overall, we anticipate this review will stimulate the design and synthesis of the next generation of COFs for use in electrochemical applications and beyond.

Department of Chemistry and International Institute of Nanotechnology Northwestern University 2145 Sheridan Road Evanston 60208 Illinois United States

Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea

Jiangsu Key Laboratory of Advanced Organic Materials Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China

Regional Centre of Advanced Technologies and Materials Department of Physical Chemistry Faculty of Science Palacky University Šlechtitelů 27 783 71 Olomouc Czech Republic

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