Three-dimensional (3D) interconnected networks fabricated via in-situ growth of N-doped graphene/carbon nanotubes on Co-containing carbon nanofibers for enhanced oxygen reduction

被引：75

作者：

Shi, Qi ^{[1
]}

Wang, Yingde ^{[1
]}

Wang, Zhongmin ^{[2
]}

Lei, Yongpeng ^{[3
]}

Wang, Bing ^{[1
]}

Wu, Nan ^{[1
]}

Han, Cheng ^{[1
]}

Xie, Song ^{[1
]}

Gou, Yanzi ^{[1
]}

机构：

[1] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Hunan, Peoples R China

[2] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China

[3] Natl Univ Def Technol, Coll Basic Educ, Changsha 410073, Hunan, Peoples R China

来源：

NANO RESEARCH | 2016年 / 9卷 / 02期

基金：

中国国家自然科学基金;

关键词：

oxygen reduction; N-doped graphene; carbon nanotubes; in-situ grown; three-dimensional (3D) interconnected fiber networks; METAL-FREE ELECTROCATALYST; HYDROGEN-EVOLUTION REACTION; ULTRAFINE FIBER MAT; EFFICIENT ELECTROCATALYST; SELECTIVE OXIDATION; POROUS CARBON; NITROGEN; PERFORMANCE; COBALT; BORON;

D O I：

10.1007/s12274-015-0911-y

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：

The strategy of combining highly conductive frameworks with abundant active sites is desirable in the preparation of alternative catalysts to commercial Pt/C for the oxygen reduction reaction (ORR). In this study, N-doped graphene (NG) and carbon nanotubes (CNT) were grown in-situ on Co-containing carbon nanofibers (CNF) to form three-dimensional (3D) interconnected networks. The NG and CNT bound the interlaced CNF together, facilitating electron transfer and providing additional active sites. The 3D interconnected fiber networks exhibited excellent ORR catalytic behavior with an onset potential of 0.924 V (vs. reversible hydrogen electrode) and a higher current density than Pt/C beyond 0.720 V. In addition, the hybrid system exhibited superior stability and methanol tolerance to Pt/C in alkaline media. This method can be extended to the design of other 3D interconnected network architectures for energy storage and conversion applications.

引用

页码：317 / 328

页数：12

共 55 条

[11] Carbon Nanofibers Prepared via Electrospinning [J].