Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (8): 1252-1261.DOI: 10.19894/j.issn.1000-0518.210458

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Facile Synthesis and High⁃Efficiency Electrocatalytic Oxygen Evolution Performance of Ternary Nickel⁃Based Chalcogenide Nanorod Arrays

Wei-Min DU1(), Xin LIU1,2, Lin ZHU1, Jia-Min FU1, Wen-Shan GUO1, Xiao-Qing YANG1, Pei-Shuo SHUANG1   

  1. 1.College of Chemistry and Chemical Engineering,Anyang Normal University,Anyang 455000,China
    2.School of Chemistry,Zhengzhou University,Zhengzhou 450001,China
  • Received:2021-09-08 Accepted:2022-02-17 Published:2022-08-01 Online:2022-08-04
  • Contact: Wei-Min DU
  • About author:dwmchem@163.com
  • Supported by:
    the Natural Science Foundation of China(U1404203);the Natural Science Foundation of Henan Province(212300410324);the Basic Research Special of Key Scientific Research Project Plan in the Universities of Henan Province(20ZX007);the Science and Technology Research Project of Henan Province(212102210037)

Abstract:

Ternary nickel-based chalcogenide (Ni3(Se x S1-x2) nanorod arrays supported by nickel foams(NF) are successfully synthesized by an one-step solvothermal method. Structural characterization results show that the obtained Ni3(Se x S1-x2 nanorods belong to the trigonal phase and form an ordered array structure on nickel foams. Due to the fast carrier transfer efficiency, abundant active sites and the synergistic effect of poly-anions, Ni3(Se0.3S0.72/NF nanorod arrays have the optimal electrocatalytic performance. In 1.0 mol/L KOH solution, Ni3(Se0.3S0.72/NF nanoarrays have the overpotential of only 344 mV at 50 mA/cm2, Tafel slope of 40.17 mV/dec, and excellent electrochemical stability. More importantly, the overall water splitting is carried out with Ni3(Se0.3S0.72/NF nanorod array as the anode and the commercial Pt/C as the cathode. It is found that a battery potential of 1.49 V can provide the electrolysis current of 10 mA/cm2, showing the good electrocatalytic effect. This work provides an efficient electrocatalyst for the field of electrolysis water technology, and also provides valuable insights for the reasonable construction of non-precious electrocatalysts in electrochemical energy technology.

Key words: Ternary, Chalcogenide, Nanoarray, Oxygen evolution reaction, Hydrogen production by electrolysis of water

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