MXene (Ti3C2Tx)‐Supported Binary Co‐, Zn‐Doped Carbon as Oxygen Reduction Reaction Catalyst for Anion Exchange Membrane Fuel Cells. Issue 5 (26th February 2022)

• Record Type: Journal Article
• Authors: Fang, Zhongwei; Xu, Chenxi; Zhang, Xiaole; Wang, Yucheng; Xiao, Tao; Wang, Ling; Chen, Mei; Liu, Xiaoteng
• Is Part Of: Energy technology. Volume 10:Issue 5(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-26
• Subjects: alkaline fuel cells -- MXenes -- non-precious metal catalysts -- oxygen reduction reaction (ORR); Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.202101168
• Languages: English
• ISSNs: 2194-4288

Abstract

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)–Ti3 C2 as an ORR electrocatalyst is prepared by one‐step pyrolysis of zeolitic imidazolate framework (ZIF)‐67/ZIF‐8 on the Ti3 C2 surface. The CoZn/NC–Ti3 C2 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. Abstract : CoZn/NC–Ti3 C2 electrocatalyst, which is prepared by one step pyrolysis on the Ti3 C2 support, presents a half‐wave potential (E1/2 ) of 0.847 V and 245 mW cm −2 peak power density. Furthermore, this catalyst exhibits an excellent stability with only 4.83% drop after 30000 s of testing. A highly effective and stabile non‐precious metal catalyst is synthesized for anion exchange membrane fuel cells.