N-doped carbon encapsulated Co3O4 nanoparticles as a synergistic catalyst for oxygen reduction reaction in acidic media

被引：24

作者：

Wang, Kai ^{[1
]}

Wang, Rongfang ^{[1
]}

Li, Hao ^{[2
]}

Wang, Hui ^{[1
]}

Mao, Xuefeng ^{[1
]}

Linkov, Vladimir ^{[3
]}

Ji, Shan ^{[3
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China

[2] Huizhou Univ, Dept Chem Engn, Huizhou 516007, Guangdong, Peoples R China

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

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 10期

基金：

中国国家自然科学基金;

关键词：

N-doped carbon material; Co3O4; Acidic media; Oxygen reduction reaction; Fuel cell; METAL-FREE ELECTROCATALYSTS; METHANOL OXIDATION; MESOPOROUS CARBON; NITROGEN; PERFORMANCE; GRAPHENE; NANOTUBES; MELAMINE; SUPPORT; IMPROVE;

D O I：

10.1016/j.ijhydene.2015.01.100

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：

N-doped carbon encapsulated Co3O4 nanoparticles (Co3O4@C-N) is synthesized as synergistic catalyst for oxygen reduction reaction (ORR) in acidic media. Due to inter-molecular force, scanning electronic microscope (SEM) show that the Co3O4@C-N particles with different sizes form a cocoon-like aggregated structure. The half-wave potential of the linear sweep voltammograms of Co3O4@C-N in O-2-saturated 0.1 M HClO4 solution is slightly lower than that of commercial Pt/XC-72 (20 wt.%), but its limited diffusion current density is similar to that of Pt/XC-72 in acidic media. Although the ORR activity of Co3O4@C-N is still a little lower than that of commercial Pt/XC-72, its low cost, long term-operating durability and excellent CH3OH tolerance render it as a potential alternative to Pt-based catalysts for ORR. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：3875 / 3882

页数：8

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