Metallic Co4N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction
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 Co4N 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 Co4N 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 Co4N 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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Single-metal nitrides have not been reported to be bifunctional.
“However, single-metal nitrides have not been reported to be bifunctional.”
From Electronic Structure Tuning in Ni<sub>3</sub>FeN/r-GO Aerogel toward Bifunctional Electrocatalyst for Overall Water Splitting (2018) · cites this paper as [19]
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Tian, J., Liu, Q., Asiri, A. M., & Sun, X. (2014) · Journal of the American Chemical Society · doi:10.1021/ja503372r · Cited by 2,373 · see citing works
Low Overpotential in Vacancy-Rich Ultrathin CoSe<sub>2</sub> Nanosheets for Water Oxidation
Liu, Y., Cheng, H., Lyu, M., Fan, S., Liu, Q., Zhang, W., Zhi, Y., Wang, C., Xiao, C., Wei, S., et al. (2014) · Journal of the American Chemical Society · doi:10.1021/ja5085157 · Cited by 1,094 · see citing works
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Chen, Z., Song, Y., Cai, J., Zheng, X., Han, D., Wu, Y., Zang, Y., Niu, S., Liu, Y., Zhu, J., et al. (2018) · Angewandte Chemie International Edition · doi:10.1002/anie.201801834 · Cited by 1,075 · see citing works
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Rational Design of Cobalt–Iron Selenides for Highly Efficient Electrochemical Water Oxidation
Zhang, J.-Y., Lv, L., Tian, Y., Li, Z., Ao, X., Lan, Y., Jiang, J., & Wang, C. (2017) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.7b08917 · Cited by 166 · see citing works
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- Authors
- Chen, P., Xu, K., Fang, Z., Tong, Y., Wu, J., Lu, X., Peng, X., Ding, H., Wu, C., & Xie, Y.
- Affiliations
- University of Science and Technology of China (CN)
- Corresponding author
- Wu, Changzheng
- Venue
- Angewandte Chemie
- Publisher
- Wiley
- Published
- 2015-10-06
- Volume
- 127
- Issue
- 49
- Pages
- 14923-14927
- ISSN
- 0044-8249 (ISSN-L)
- 1521-3757
- OpenAlex
- W4240143538
- Cited by
- 285
- References
- 2
- Citations by year
- 2026: 9 · 2025: 15 · 2024: 23 · 2023: 17 · 2022: 21 · 2021: 25 · 2020: 26 · 2019: 37 · 2018: 46 · 2017: 37 · 2016: 29
- FWCI
- 11.04
- Type
- journal article
- Language
- de
- Open access
- closed
- Locations
- Angewandte Chemie (publishedVersion)
- 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)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Supercapacitor Materials and Fabrication
- Keywords
- oxygen evolution reaction, electrocatalysts, flexible substrates, carbon cloth, alkaline water electrolysis, Tafel slope, overpotential
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