MXene (Ti3C2Tx)-Supported Binary Co-, Zn-Doped Carbonas Oxygen Reduction Reaction Catalyst for Anion Exchange Membrane Fuel Cells

ransition metal–nitrogen–carbon materials are used as catalysts for the oxygen reduction reaction (ORR) because of their low cost, high activity, and stability in the alkaline medium. Herein, CoZn/nitrogen–carbon (NC)–Ti3C2 as an ORR electrocatalyst is prepared by one-step pyrolysis of zeolitic imidazolate framework (ZIF)-67/ZIF-8 on the Ti3C2 surface. The CoZn/NC–Ti3C2 catalyst presents considerable kinetics with a half-wave potential (E1/2) of 0.847 V, and the fuel cell peak power density reaches 245 mW cm−2. Furthermore, this catalyst exhibits an excellent stability with only 4.83% drop of relative current after 30000 s of testing. Herein, a new strategy for high-effective and high-stability non-precious metal catalysts for anion exchange membrane fuel cells is provided