N-Doped Carbon Materials Derived from Covalent Triazine FrameworkMof for Efficient Oxygen Reduction Reaction

Covalent triazine frameworks (CTFs) have utilized for a broad range of applications, including gas separation and storage, chemical sensing and catalysts, owing to their unique physicochemical properties. However, CTFs typically exhibit low electrocatalytic activity as a result of their poor electrical conductivity. Here, a CTF@MOF derived carbon-based catalyst has been first synthesized, the CTF supported on the MOF surface, which can prevent the collapse and aggregation of the CTF during pyrolysis. CTF was doped with a noble metal free cocatalyst MOF to yield a series of CTF@MOF-x (x=15, 24, 33 wt%), CTF@MOF-x were further annealed to obtain carbon materials (MC-x-700) for ORR in alkaline media. The electrocatalyst exhibited outstanding ORR activity in 0.1 M KOH comparable to the 20 wt% commercial Pt/C in terms of onset potential (Eonset), and half-wave potential (E1/2), which also exhibited excellent durability and excellent methanol tolerance. This work provides a new opportunity for CTF derived carbon-based electrocatalysts to achieve efficient ORR performance