A simple strategy for the construction of bi-supported triazine-based covalent organic frameworks as high-performance capacitive materials
NEW JOURNAL OF CHEMISTRY(2024)
Abstract
A series of hybrid materials with different carbon nanotube contents TD-COF@CNTx (x = 0.05, 0.25, 0.45, and 0.65) were successfully prepared by one-pot method, where x represents the mass of carbon nanotubes added during the preparation process. Among them, TD-COF@CNT0.45 exhibits the best electrochemical performance (67.5 F g-1) at a current density of 1 A g-1. In order to further improve the electrochemical performance of the material, PEDOT with high conductivity was introduced to obtain a dual supported hybrid material TD-COF@CNT0.45@PEDOT. Under the same conditions, TD-COF@CNT0.45@PEDOT displays a higher specific capacitance of 81.3 F g-1, which is 2.5 times that of pure TD-COF. It is gratifying that TD-COF@CNT0.45@PEDOT exhibits excellent cycling stability, and its specific capacitance can still reach 93% of the initial value after 5000 cycles. This study indicates that the simultaneous introduction of CNT and PEDOT into COFs can significantly improve the electrochemical performance of COF hybrid materials. A series of hybrid materials with different carbon nanotube contents TD-COF@CNTx (x = 0.05, 0.25, 0.45, and 0.65) were successfully prepared by using a one-pot method, where x represents the mass of carbon nanotubes added during the preparation process.
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