Integrated Carbon Nanotube and Ketoenamine‐Linked Covalent Organic Framework with Positive Charge Structure as High‐Performance Capacitive Materials

Abstract

A series of composite materials, ETB@CNT (ETB@CNT10, ETB@CNT20, ETB@CNT30, ETB@CNT40, ETB@CNT50) with different carbon nanotubes (CNTs) contents are successfully prepared by using one‐pot method. Compared with the pure ET‐B‐COF, which is a ketoenamine‐linked covalent organic framework (COF) with a positive charge structure, CNTs can effectively improve the electrochemical performance of ET‐B‐COF, and the specific capacitance increased with the increase of the mass of carbon nanotubes added during the preparation process. Among them, ETB@CNT40 exhibits the best electrochemical performance (37.6 F g−1) at a current density of 1 A g−1. This study indicates that the simultaneous introduction of CNTs into COFs can significantly improve the electrochemical performance of ketoenamine‐linked COFs materials.