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Metal–Organic Framework Derived Hybrid Co3O4-Carbon Porous Nanowire Arrays as Reversible Oxygen Evolution Electrodes

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Ma, Tian Yi, Dai, Sheng, Jaroniec, Mietek, Qiao, Shi Zhang·2014·Journal of the American Chemical Society
DOI 10.1021/ja5082553
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Abstract

Hybrid porous nanowire arrays composed of strongly interacting Co3O4 and carbon were prepared by a facile carbonization of the metal-organic framework grown on Cu foil. The resulting material, possessing a high surface area of 251 m(2) g(-1) and a large carbon content of 52.1 wt %, can be directly used as the working electrode for oxygen evolution reaction without employing extra substrates or binders. This novel oxygen evolution electrode can smoothly operate in alkaline solutions (e.g., 0.1 and 1.0 M KOH), affording a low onset potential of 1.47 V (vs reversible hydrogen electrode) and a stable current density of 10.0 mA cm(-2) at 1.52 V in 0.1 M KOH solution for at least 30 h, associated with a high Faradaic efficiency of 99.3%. The achieved ultrahigh oxygen evolution activity and strong durability, with superior performance in comparison to the state-of-the-art noble-metal/transition-metal and nonmetal catalysts, originate from the unique nanowire array electrode configuration and in situ carbon incorporation, which lead to the large active surface area, enhanced mass/charge transport capability, easy release of oxygen gas bubbles, and strong structural stability. Furthermore, the hybrid Co3O4-carbon porous nanowire arrays can also efficiently catalyze oxygen reduction reaction, featuring a desirable four-electron pathway for reversible oxygen evolution and reduction, which is potentially useful for rechargeable metal-air batteries, regenerative fuel cells, and other important clean energy devices.

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Metadata

Authors
Ma, T. Y., Dai, S., Jaroniec, M., & Qiao, S. Z.
Venue
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Published
2014-09-22
Volume
136
Issue
39
Pages
13925-13931
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
DOI
10.1021/ja5082553
OpenAlex
W2048407205
Cited by
1,846
References
5
FWCI
66.58
Type
journal article
Language
en
Open access
green
Funders
Australian Research Council (DP130104459, DP140104062)

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Ma, T. Y., Dai, S., Jaroniec, M., & Qiao, S. Z. (2014). Metal–Organic Framework Derived Hybrid Co3O4-Carbon Porous Nanowire Arrays as Reversible Oxygen Evolution Electrodes. Journal of the American Chemical Society. https://doi.org/10.1021/ja5082553

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