Synergy between isolated-Fe3O4 nanoparticles and CNx layers derived from lysine to improve the catalytic activity for oxygen reduction reaction

被引：24

作者：

Yang, Huijuan ^{[1
]}

Wang, Hui ^{[1
]}

Ji, Shan ^{[2
]}

Linkov, Vladimir ^{[2
]}

Wang, Rongfang ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecoenvirom Related Polymer Mat, Lanzhou 730070, Peoples R China

[2] Univ Western Cape, South African Inst Adv Mat Chem, ZA-7535 Bellville, South Africa

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Iron oxide; Nitrogen-doped carbon; Lysine; Oxygen reduction reaction; METAL-FREE ELECTROCATALYST; PEM FUEL-CELLS; CARBON NANOTUBES; ALKALINE MEDIA; GRAPHENE; SUPPORT; PERFORMANCE; COMPOSITE;

D O I：

10.1016/j.ijhydene.2013.12.160

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：

In order to seek heterogeneous electrocatalyst with efficient catalytic activity for oxygen reduction reaction (ORR), Fe3O4-CNx composite reported in our previous work was studied as electrocatalyst for ORR and showed poor catalytic activity. To improve the catalytic activity, Fe3O4-CNx composite is modified by the CNx layers derived from lysine through pyrolysis. The physical characterization show that the coral-shaped morphology of the resultant composite (Fe3O4-CNx-Lys) is still retained, while the degree of its graphitic crystalline increases. Besides, Fe3O4-CNx-Lys has 364.7 m(2) g(-1) of surface area with hierarchical porous structure. Electrochemical tests show that the catalytic activity Fe3O4-CNx-Lys for ORR is not only higher than those Fe3O4-CNx, XC-72-Lys derived from lysine and XC-72 Vulcan carbon but also comparable to that of commercial Pt/C (20 wt%). Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：3739 / 3745

页数：7

共 26 条

[21] Efficient Synthesis of Heteroatom (N or S)-Doped Graphene Based on Ultrathin Graphene Oxide-Porous Silica Sheets for Oxygen Reduction Reactions [J].