Strong-coupled Co-g-C3N4/SWCNTs composites as high-performance electrocatalysts for oxygen reduction reaction

Qiangmin Yu; Jiaoxing Xu; Chuxin Wu; Lunhui Guan

doi:10.1039/C5RA11397K

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Strong-coupled Co-g-C₃N₄/SWCNTs composites as high-performance electrocatalysts for oxygen reduction reaction†

Qiangmin Yu,^abc Jiaoxing Xu,^ab Chuxin Wu^ab and Lunhui Guan*^ab

Author affiliations

* Corresponding authors

^a Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, YangQiao West Road 155#, Fuzhou, Fujian 350002, P. R. China
E-mail: guanlh@fjirsm.ac.cn
Fax: +86-591-6317-3550
Tel: +86-591-6317-3550

^b Fujian Key Laboratory of Nanomaterials, Fuzhou, Fujian 350002, China

^c University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

The hybrid materials of cobalt doped graphitic carbon nitride (g-C₃N₄) attached on single-walled carbon nanotubes (SWCNTs) were synthesized by a simple pyrolysis process. Electrochemical measurements revealed that the composites exhibited excellent electrocatalytic activity for oxygen reduction reaction (ORR), with a more positive onset potential (−0.03 V), half-wave potential (−0.15 V), high efficiency four-electron process (n = 3.97) and much higher stability than that of commercial Pt/C catalysts in alkaline media. The ORR activity mainly originates from the strong coupling of Co-g-C₃N₄ derived active sites on the SWCNTs.

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Article information

DOI: https://doi.org/10.1039/C5RA11397K
Article type: Communication
Submitted: 15 Jun 2015
Accepted: 24 Jul 2015
First published: 24 Jul 2015

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RSC Adv., 2015,5, 65303-65307

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Strong-coupled Co-g-C₃N₄/SWCNTs composites as high-performance electrocatalysts for oxygen reduction reaction

Q. Yu, J. Xu, C. Wu and L. Guan, RSC Adv., 2015, 5, 65303 DOI: 10.1039/C5RA11397K

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