We developed a new HAT-DAB covalent organic framework which shows impressive performance as a cathode material in lithium-ion batteries. The material was prepared in the solution phase with readily available chemicals through relatively fast reactions with appreciable yields which could be easily upscaled. The COF shows extremely high stability under strong acidic and basic conditions. This novel COF material possesses a comparably higher capacity of 265 mAh/g at 0.02 A/g current density. We also observed the capacity retention is ~75% even after 216 cycles with ~98% Columbic efficiency throughout the charging-discharging process. The plausible mechanism of 12 Li + ions accommodation, makes this COF material with higher theoretical capacity, which could be achieved with further modifications. This material demonstrated a significantly high energy density of 607 Wh/kg alongside its high capacity and stability, positioning it as a more promising candidate compared to other COF materials.