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Issue 7, 2017, Issue in Progress
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MOF-derived RuO2/Co3O4 heterojunctions as highly efficient bifunctional electrocatalysts for HER and OER in alkaline solutions

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Abstract

The oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are key half reactions involved in electrochemical water splitting. The design of active and robust Co3O4-based electrocatalysts for overall water splitting in basic media is highly desirable but still remains a great challenge. Herein, a catalyst of a combined metal oxide heterojunction (RuO2/Co3O4) was synthesized by directly annealing a MOF-derived Co–Ru complex under an air atmosphere. The catalyst shows a low OER and HER overpotential of only 305 mV and 89 mV at 10 mA cm−2 in 1 M KOH solution, respectively. It contains only a small amount of precious metal oxides, however, and demonstrates a better performance than most of the other Co3O4-based electrocatalysts reported at the present stage.

Graphical abstract: MOF-derived RuO2/Co3O4 heterojunctions as highly efficient bifunctional electrocatalysts for HER and OER in alkaline solutions

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Publication details

The article was received on 25 Oct 2016, accepted on 05 Dec 2016 and first published on 13 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA25810G
Citation: RSC Adv., 2017,7, 3686-3694
  • Open access: Creative Commons BY-NC license
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    MOF-derived RuO2/Co3O4 heterojunctions as highly efficient bifunctional electrocatalysts for HER and OER in alkaline solutions

    H. Liu, G. Xia, R. Zhang, P. Jiang, J. Chen and Q. Chen, RSC Adv., 2017, 7, 3686
    DOI: 10.1039/C6RA25810G

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