催化作用
二茂铁
热解
材料科学
电化学
无机化学
碳纤维
化学工程
金属
纳米技术
化学
氮气
电极
有机化学
物理化学
冶金
复合数
复合材料
工程类
作者
Jinpeng Wang,Guokang Han,Liguang Wang,Lei Du,Guangyu Chen,Yunzhi Gao,Yulin Ma,Chunyu Du,Xinqun Cheng,Pengjian Zuo,Geping Yin
出处
期刊:Small
[Wiley]
日期:2018-03-05
卷期号:14 (15)
被引量:250
标识
DOI:10.1002/smll.201704282
摘要
The oxygen reduction reaction (ORR) plays an important role in the fields of energy storage and conversion technologies, including metal-air batteries and fuel cells. The development of nonprecious metal electrocatalysts with both high ORR activity and durability to replace the currently used costly Pt-based catalyst is critical and still a major challenge. Herein, a facile and scalable method is reported to prepare ZIF-8 with single ferrocene molecules trapped within its cavities (Fc@ZIF-8), which is utilized as precursor to porous single-atom Fe embedded nitrogen-doped carbon (Fe-N-C) during high temperature pyrolysis. The catalyst shows a half-wave potential (E1/2 ) of 0.904 V, 67 mV higher than commercial Pt/C catalyst (0.837 V), which is among the best compared with reported results for ORR. Significant electrochemical properties are attributed to the special configuration of Fc@ZIF-8 transforming into a highly dispersed iron-nitrogen coordination moieties embedded carbon matrix.
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