Abstract
Two-dimensional (2D) porous frameworks have garnered significant research interest as a new generation of multifunctional materials. Examples of such frameworks include 2D covalent organic frameworks and 2D conjugated metal-organic frameworks. These structures are characterized by their regular porosities, large specific surface areas, and exceptional chemical stability. Moreover, 2D porous frameworks exhibit distinct properties, such as designable topologies and well-defined redox-active sites, which have sparked increased exploration of these materials for electrochemical energy storage applications.[1] In this presentation, I will illustrate how 2D porous frameworks offer promising electrode alternatives for the next generation of energy storage devices. This will be demonstrated through examples including 2D polyarylimide covalent organic frameworks for multivalent metal batteries[2-3] and 2D conjugated metal-organic frameworks, which serve as appealing pseudocapacitive electrodes[4-5]. Besides, I will present our recent endeavors in exploring 2D crystalline polymers as effective interfacial coatings for batteries.[6-7] These coatings facilitate efficient interfacial ion transport and charge transfer, thus effectively enhancing the overall electrochemical reaction kinetics, reversibility, and durability.
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