Issue 39, 2016, Issue in Progress

Synthesis of hybrid carbon spheres@nitrogen-doped graphene/carbon nanotubes and their oxygen reduction activity performance

Abstract

The hybrid architecture of carbon spheres@nitrogen-doped graphene/carbon nanotubes (CS@N-G/CNT) was synthesized by a hydrothermal and ultrasonic-assisted method. It consisted of one-dimensional CNTs and two-dimensional N-doped graphene (N-G) supporting zero-dimensional carbon spheres (CSs). The electrocatalytic activity of the hybrid CS@N-G/CNT shows a better oxygen reduction reaction (ORR) than CS, CNT, N-G, and CS@N-G in alkaline media. More importantly, it displays both a higher mass activity and better stability than a commercial Pt/C. The high electrocatalytic activity and stable oxygen reduction electrocatalyst could be attributed to the higher surface areas and larger pore volume, as well as the synergistic effects of the different dimensional carbon materials, which was beneficial to the diffusion of the electrolyte and O2 during the ORR.

Graphical abstract: Synthesis of hybrid carbon spheres@nitrogen-doped graphene/carbon nanotubes and their oxygen reduction activity performance

Supplementary files

Article information

Article type
Paper
Submitted
11 Jan 2016
Accepted
22 Mar 2016
First published
24 Mar 2016

RSC Adv., 2016,6, 32661-32669

Synthesis of hybrid carbon spheres@nitrogen-doped graphene/carbon nanotubes and their oxygen reduction activity performance

L. Zhang, H. Li, K. Li, J. Wei and Q. Fu, RSC Adv., 2016, 6, 32661 DOI: 10.1039/C6RA00819D

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