A new benzimidazole based covalent organic polymer having high energy storage capacity

Abstract

We report the synthesis of a new benzimidazole-based covalent organic polymer (TpDAB) via solvothermal Schiff base condensation between 1,3,5-triformylphloroglucinol (Tp) and 3,3′-diaminobenzidine (DAB). TpDAB showed high energy storage capacity with a specific capacitance of 335 F g⁻¹ at 2 mV s⁻¹ scan rate and good cyclic stability with 93% retention of its initial specific capacitance after 1000 cycles.