Efficient electrocatalyst of Pt-Fe/CNFs for oxygen reduction reaction in alkaline media

被引：15
作者：
Liu, Lei [1 ,2 ]
Liu, Huan [1 ,2 ]
Sun, Xingwei [1 ,2 ]
Li, Chunping [1 ,2 ]
Bai, Jie [1 ,2 ]
机构：
[1] Inner Mongolia Univ Technol, Chem Engn Coll, Hohhot 010051, Peoples R China
[2] Inner Mongolia Key Lab Ind Catalysis, Hohhot 010051, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 30期
基金：
中国国家自然科学基金;
关键词：
Electrocatalysis; Oxygen reduction reaction; Platinum-iron; Carbon nanofiber; ONE-POT SYNTHESIS; HYDROGEN EVOLUTION; CARBON NANOFIBERS; HIGHLY EFFICIENT; BIFUNCTIONAL ELECTROCATALYST; PERFORMANCE ORR; FE; CATALYST; NANOTUBES; CO;
D O I：
10.1016/j.ijhydene.2020.03.243
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Transition metal iron-based catalysts are promising electrocatalysts for oxygen reduction reaction (ORR), and they have the potential to replace noble metal catalysts. The one-dimensional of carbon nanofibers with tubular structure can effectively promote the electrocatalytic activity, which facilitates electron transport. Herein, the Pt-Fe/CNEs were synthesized by electrospinning and subsequent calcination. Benefiting from the advantages of one-dimensional structure, Pt-Fe/CNEs-900 with fast electrochemical kinetics and excellent stability for ORR with excellent onset of 0.99 V, a low Tafel slope of 62 mV dec(-1) and high limiting current density of 6.00 mA cm(-2). Long-term ORR testing indicated that the durability of this catalyst was superior to that of commercial Pt/C in alkaline electrolyte. According to RRDE test, the ORR reaction process of Pt-Fe/CNFs-900 was close to fourelectron transfer routes. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：15112 / 15120
页数：9
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