Issue 46, 2015

Polydopamine-derived porous carbon fiber/cobalt composites for efficient oxygen reduction reactions

Abstract

Dopamine is an excellent and flexible agent for surface coating of various materials, with the high-concentration of amine groups serving as a facile stabilizer for some metallic nanoparticles. In this work, mesoporous composites of nitrogen-doped carbon fibers (NCFs) decorated with cobalt nanoparticles have been successfully fabricated via the combination of a mussel-inspired biomimetic polydopamine (PDA)-coating process using electrospun porous polystyrene fibers as templates, a simple solution deposition method and subsequent high-temperature carbonization. This rationally designed porous NCF–Co composite possesses a large surface area and numerous electrochemically active sites, which exhibits synergistically improved catalytic activity for oxygen reduction reactions (ORRs) with a relatively positive onset potential, large current density, as well as superior durability compared with the commercial platinum–carbon (Pt/C) catalyst, making it a promising noble-metal-free catalyst for practical ORR applications.

Graphical abstract: Polydopamine-derived porous carbon fiber/cobalt composites for efficient oxygen reduction reactions

Supplementary files

Article information

Article type
Paper
Submitted
08 Aug 2015
Accepted
09 Oct 2015
First published
09 Oct 2015

J. Mater. Chem. A, 2015,3, 23299-23306

Polydopamine-derived porous carbon fiber/cobalt composites for efficient oxygen reduction reactions

J. Yan, H. Lu, Y. Huang, J. Fu, S. Mo, C. Wei, Y. Miao and T. Liu, J. Mater. Chem. A, 2015, 3, 23299 DOI: 10.1039/C5TA06217A

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