Hierarchical carbon material of N-doped carbon quantum dots in-situ formed on N-doped carbon nanotube for efficient oxygen reduction

被引：45

作者：

Huang, Yanting ^{[1
]}

Liao, Wugang ^{[2
]}

机构：

[1] Shenzhen Univ, Coll Management, Mobile Internet Things Industralizat Inst, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Coll Elect Sci & Technol, Inst Microscale Optoelect, Shenzhen 518060, Guangdong, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2019年 / 495卷

关键词：

Carbon quantum dots; Carbon nanotube; Nitrogen doping; Oxygen reduction reaction; ELECTROCATALYTIC ACTIVITY; NITROGEN; GRAPHENE; SPHERES; NANOPARTICLES; CATALYSTS; ELECTRODE; ARRAYS; ENERGY;

D O I：

10.1016/j.apsusc.2019.143597

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：

A facile one-pot hydrothermal method was proposed to fabricate nitrogen-doped carbon quantum dots (N-doped CQDs) on the surface of nitrogen-doped carbon nanotube (N-doped CNTs). The microstructure of the N-doped CQDs/N-doped CNTs hybrid was investigated by using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Furthermore, their electrocatalytic activity of the N-doped CQDs/N-doped CNTs hybrid in oxygen reduction reaction (ORR) was systematically evaluated and it was found that the N-doped CQDs/N CNTs hybrid deposited as such exhibits a high performance for ORR in terms of a low onset potential of - 0.03 V vs. Ag/AgCl, a high limiting diffusion current density of similar to 5.5 mA cm(-2), and a one-step 4e ORR process, holding great potential for future metal-free catalysts.

引用

页数：6

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