Journal of Materials Science

, Volume 55, Issue 4, pp 1627–1636 | Cite as

Hierarchical NiCo2S4 nanosheets grown on graphene to catalyze the oxygen evolution reaction

  • Chao Shuai
  • Zunli MoEmail author
  • Xiaohui Niu
  • Xing Yang
  • Guigui Liu
  • Jia Wang
  • Nijuan Liu
  • Ruibin Guo
Energy materials


Efficient transition metal-based electrocatalysts for oxygen evolution reaction (OER) are vital for water splitting to make H2 fuel. Here, the hierarchical NiCo2S4 nanosheets/reduced graphene oxide (NiCo2S4/RGO) architecture composite was designed and synthesized. The constitution and morphology of NiCo2S4/RGO composites were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscope and transmission electron microscope. Then, the electrochemical performance of as-prepared NiCo2S4/RGOs for OER was studied. The optimal composite (NiCo2S4/RGO-2) exhibited the best improved compared to raw NiCo2S4 on OER performance, which afforded a small overpotential (366 mV at current density of 10 mA cm−2) and a low Tafel slope of 65 mV dec−1 and good stability in 1.0 M KOH electrolyte. The hierarchical architecture of the NiCo2S4/RGO system endows more active sites and enhances charge transfer. This work provided a general strategy to design more efficient NiCo-based chalcogenide OER electrocatalysts.



This work was supported by the National Natural Science Foundation of China (51262027); the State Key Laboratory of Solidification Processing in northwest normal university (SKLSP201754); the Science and Technology Project Gansu Province (17YF1GA017, 17JR5RA082); the Research Project of Higher Education in Gansu Province (2017A-002).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material

10853_2019_4038_MOESM1_ESM.docx (3.7 mb)
Supplementary material 1 (DOCX 3782 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Research Center of Gansu Military and Civilian Integration Advanced Structural MaterialsLanzhouPeople’s Republic of China
  2. 2.Key Laboratory of Eco-Environment-Related Polymer MaterialsMinistry of Education of ChinaLanzhouPeople’s Republic of China
  3. 3.Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhouPeople’s Republic of China

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