Nanodiamond/nitrogen-doped graphene (core/shell) as an effective and stable metal-free electrocatalyst for oxygen reduction reaction

被引：20

作者：

Dong, Liang ^{[1
,2
]}

Zang, Jianbing ^{[1
]}

Su, Jing ^{[1
]}

Jia, Yingdan ^{[1
]}

Wang, Yanhui ^{[1
]}

Lu, Jing ^{[3
]}

Xu, Xipeng ^{[3
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Coll Mat Sci & Engn, Qinhuangdao 066004, Peoples R China

[2] Northeastern Univ, Sch Resources & Mat, Qinhuangdao 066004, Peoples R China

[3] Huaqiao Univ, MOE Engn Res Ctr Brittle Mat Machining, Xiamen 361021, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2015年 / 174卷

基金：

中国国家自然科学基金;

关键词：

Core-shell Structure; Nitrogen-doped Graphene; Nanodiamond; Oxygen Reduction Reaction; PEM FUEL-CELL; CARBON NANOFIBERS; RECENT PROGRESS; CATALYSTS; IMPURITIES; ELECTRODES; OXIDE;

D O I：

10.1016/j.electacta.2015.06.057

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nitrogen-doped graphene (N-G) covering a nanodiamond (ND) was prepared via the thermal conversion of ND followed by a new post-doping treatment. Compared with conventional N-G, the core-shell structure of ND/N-G weakened the stacking of graphene nanosheets. Meanwhile the prepared ND/N-G showed a high level of electrocatalytic activity for oxygen reduction reaction (ORR) and a high electrochemical stability. No metal impurities are expected to be introduced into the N-G through this treatment. There is strong support for N-doped as an important factor to enhance the ORR electrocatalytic activity of carbon materials. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1017 / 1022

页数：6

共 31 条

[1] Carbon nanotubes contain metal impurities which are responsible for the "electrocatalysis" seen at some nanotube-modified electrodes [J].