Additionally, the CVs of pure COF@bio, COF@bio-20, and COF@bio/40 exhibited similar shapes and peak/reduction peak pairs (Figs. ), reflecting similar electrochemical properties due to their identical active chemical structures and similar electrochemical processes. However, COF@bio-40 displayed relatively stronger current signals with a comparable quantity of active material compared to pure COF@bio, COF@bio-20, and COF@bio/40, highlighting the superior lithium storage capability of COF@bio-40 and demonstrating that the CNT enhanced electronic conductivity.