All-Covalent Organic Framework Nanofilms Assembled Lithium-Ion Capacitor to Solve the Imbalanced Charge Storage Kinetics

Highlights An all-covalent organic framework (COF) nanofilm-structured lithium-ion capacitor (LIC) was developed by custom-made COF nanofilms as the anode/cathode. The COF nanofilm-structured LIC exhibits good electrochemical properties via the fast Li + transport kinetics of the anodic COF BTMB-TP nanofilm and the high specific capacity of the cathodic COF TAPB-BPY nanofilm. This work can realize the charge storage kinetics and capacity balance of anode/cathode in COF TAPB-BPY //COF BTMB-TP LIC.