Atomic Fe-N4 sites on electrospun hierarchical porous carbon nanofibers as an efficient electrocatalyst for oxygen reduction reaction

被引：40

作者：

Zhong, Ruiqin ^{[1
]}

Zhi, Chenxu ^{[1
]}

Wu, Yingxiao ^{[2
]}

Liang, Zibin ^{[2
]}

Tabassum, Hassina ^{[2
]}

Zhang, Hao ^{[2
]}

Qiu, Tianjie ^{[2
]}

Gao, Song ^{[2
]}

Shi, Jinming ^{[2
]}

Zou, Ruqiang ^{[2
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

[2] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing Key Lab Theory & Technol Adv Battery Mat, Beijing 100871, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2020年 / 31卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Atomically dispersed metal sites; Metal-organic frameworks; Electrospinning; Oxygen reduction reaction; Electrocatalysis; CATALYST; IRON; GRAPHENE;

D O I：

10.1016/j.cclet.2019.12.004

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Porous carbon materials doped with atomically dispersed metal sites (ADMSs) are promising electrocatalysts for oxygen reduction reaction (ORR) electrocatalysis. In this work, we fabricated hierarchical porous nitrogen-doped carbon nanofibers with atomically dispersed Fe-N-4 sites by carbonization of electrospinning iron-based metal-organic frameworks (MOFs)/polyacrylonitrile nanofibers for ORR electrocatalysis. Remarkably, the resultant carbon nanofibers with atomically dispersed FeN4 sites exhibit extraordinary electrochemical performance with an onset potential of 0.994 V and a halfwave potential of 0.876 V in alkaline electrolyte, comparable to the benchmark commercial Pt/C catalyst. The high catalytic performance is originated from the unique hierarchically porous 1D carbon structure and abundant highly active atomically dispersed Fe-N-4 sites. (c) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：1588 / 1592

页数：5

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