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Efficient oxygen evolution electrocatalyzed by a Cu nanoparticle-embedded N-doped carbon nanowire array

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Abstract

Development of efficient and durable catalysts based on earth-abundant elements for oxygen evolution reactions (OER) is important for renewable energy storage and conversion technologies. Herein, we report the development of a Cu nanoparticle-embedded N-doped carbon nanowire array on copper foam (Cu–N–C NA/CF) via carbonization of a Cu(TCNQ) (TCNQ = 7,7,8,8-tetracyanoquinodimethane) nanoarray. As a 3D OER electrode, this Cu–N–C NA/CF shows high catalytic activity, needing an overpotential of 314 mV to drive a geometrical current density of 20 mA cm−2 in 1.0 M KOH. It also shows strong long-term electrochemical durability. This suggested that CuO nanoparticles as active species were in situ electrochemically converted from Cu nanoparticles and stably dispersed in the carbon matrix during electrocatalysis.

Graphical abstract: Efficient oxygen evolution electrocatalyzed by a Cu nanoparticle-embedded N-doped carbon nanowire array

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Publication details

The article was received on 08 Feb 2018, accepted on 20 Mar 2018 and first published on 20 Mar 2018


Article type: Research Article
DOI: 10.1039/C8QI00119G
Citation: Inorg. Chem. Front., 2018, Advance Article
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    Efficient oxygen evolution electrocatalyzed by a Cu nanoparticle-embedded N-doped carbon nanowire array

    X. Zhu, X. Shi, A. M. Asiri, Y. Luo and X. Sun, Inorg. Chem. Front., 2018, Advance Article , DOI: 10.1039/C8QI00119G

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