Fabricating stable quinoline-linked phenothiazine-based covalent organic frameworks for flexible supercapacitors

Abstract

A stable quinoline-linked phenothiazine-based covalent organic framework (QCOF) was constructed. The MXene/QCOF@CNT electrode was then fabricated for flexible supercapacitors. Notably, it achieves 11 Wh kg⁻¹ at 250 W kg⁻¹ and retains 100% of its capacitance even after 5000 cycles, which is attributed to the high stability of the QCOF composite.