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

Zhongwei Fang, Chenxi Xu*, Xiaole Zhang, Yucheng Wang, Tao Xiao, Ling Wang, Mei Chen, Xiaoteng Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Transition 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.
Original languageEnglish
Article number2101168
Number of pages6
JournalEnergy Technology
Early online date26 Feb 2022
DOIs
Publication statusE-pub ahead of print - 26 Feb 2022

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