Curvature defect engineering towards a high-performance COF-based cathode in lithium-ion batteries.

ABSTRACT: Covalent organic frameworks (COFs), a type of function-oriented porous material, show great potential in rechargeable batteries owing to well-defined ion channels and a flexible framework design. However, the active sites in COFs are almost impossible to fully utilize because of insufficient electron transport or ion diffusion. Here, a defect-rich COF@CNT cathode (RBT-COF@CNT-50) was designed using curvature defect engineering to enhance the electrochemical reaction kinetics. The synergistic effect of the defect-rich D-A framework with the CNT-interlaced network endows RBT-COF@CNT-50 with a higher electron conductivity of 2.65 × 10^-4 S m^-1. The emergence of additional defect decorated with polar functional groups in RBT-COF@CNT, induced by the curvature effects, contr

SUBMITTER: Duan J 

PROVIDER: S-EPMC12813857 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature