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Metallic Co4N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction

Chen, Pengzuo, Xu, Kun, Fang, Zhiwei, Tong, Yun, Wu, Junchi, Lu, Xiuli, Peng, Xu, Ding, Hui, Wu, Changzheng, Xie, Yi·2015·Angewandte Chemie International Edition

Abstract

Designing highly efficient electrocatalysts for oxygen evolution reaction (OER) plays a key role in the development of various renewable energy storage and conversion devices. In this work, we developed metallic Co 4 N porous nanowire arrays directly grown on flexible substrates as highly active OER electrocatalysts for the first time. Benefiting from the collaborative advantages of metallic character, 1D porous nanowire arrays, and unique 3D electrode configuration, surface oxidation activated Co 4 N porous nanowire arrays/carbon cloth achieved an extremely small overpotential of 257 mV at a current density of 10 mA cm−2, and a low Tafel slope of 44 mV dec−1 in an alkaline medium, which is the best OER performance among reported Co‐based electrocatalysts to date. Moreover, in‐depth mechanistic investigations demonstrate the active phases are the metallic Co 4 N core inside with a thin cobalt oxides/hydroxides shell during the OER process. Our finding introduces a new concept to explore the design of high‐efficiency OER electrocatalysts.

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Metadata

Authors
Chen, P., Xu, K., Fang, Z., Tong, Y., Wu, J., Lu, X., Peng, X., Ding, H., Wu, C., & Xie, Y.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2015-10-06
Volume
54
Issue
49
Pages
14710-14714
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W1933615376
Cited by
789
References
4
FWCI
27.08
Type
journal article
Language
en
Open access
closed
Funders
  • National Basic Research Program of China (2015CB932302)
  • National Natural Science Foundation of China (21222101, U1432133, 11132009, 21331005, 11321503, U1532265, J1030412)
  • Chinese Academy of Sciences (XDB01020300)
  • Fok Ying-Tong Education Foundation, China (141042)
  • Fundamental Research Funds for the Central Universities (WK2060190027)

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CoChat. (2026). Citation check: Metallic Co4N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction. https://app.cochat.ai/papers/10.1002/anie.201506480
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Chen, P., Xu, K., Fang, Z., Tong, Y., Wu, J., Lu, X., Peng, X., Ding, H., Wu, C., & Xie, Y. (2015). Metallic Co4N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201506480

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