催化作用
电催化剂
沸石咪唑盐骨架
热解
碳纤维
无机化学
材料科学
质子交换膜燃料电池
化学工程
过渡金属
咪唑酯
离子交换
氮气
化学
金属有机骨架
离子
电化学
物理化学
有机化学
电极
吸附
工程类
复合材料
复合数
作者
Zhongwei Fang,Chenxi Xu,Xiaole Zhang,Yucheng Wang,Tao Xiao,Ling Wang,Mei Chen,Xiaoteng Liu
标识
DOI:10.1002/ente.202101168
摘要
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)–Ti 3 C 2 as an ORR electrocatalyst is prepared by one‐step pyrolysis of zeolitic imidazolate framework (ZIF)‐67/ZIF‐8 on the Ti 3 C 2 surface. The CoZn/NC–Ti 3 C 2 catalyst presents considerable kinetics with a half‐wave potential (E 1/2 ) 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.
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