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The Study on Defect-rich Carbon-Spheres as Metal-Free Electrocatalyst for Efficient Oxygen Reduction Reaction

Abstract

In this work, we report a new, economical, scalable synthetic strategy to prepare pure carbon-spheres (CSs) without dopants or residual metal, the super CSs give rise to an excellent oxygen reduction reaction (ORR) performance in terms of activity and reaction kinetics, especially, of a superior stability, there is no attenuation of the half-wave potential for CSs-20h-900 after running 13,500 cycles of CV in O2 saturated 0.1 M KOH. All of which confirm the significant role of intrinsic defects for high-activity ORR without interruption by any other dopants. The study of carbon defects shed fresh light on the true activity origin of metal-free ORR catalysts and is fundamentally important and technically promising to promote the development of other original, low-cost, high-efficiency carbon-based metal-free electrocatalysts.

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Publication details

The article was received on 15 Aug 2017, accepted on 13 Oct 2017 and first published on 13 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA07203A
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    The Study on Defect-rich Carbon-Spheres as Metal-Free Electrocatalyst for Efficient Oxygen Reduction Reaction

    Q. Xiang, W. Yin, Y. Liu, D. Yu, X. Wang, S. Li and C. Chen, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA07203A

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