Citation: Jingwei Li, Qiuna Zhuang, Peiman Xu, Dawei Zhang, Licheng Wei, Dingsheng Yuan. Three-dimensional lily-like CoNi₂S₄ as an advanced bifunctional electrocatalyst for hydrogen and oxygen evolution reaction[J]. Chinese Journal of Catalysis, ;2018, 39(8): 1403-1410. doi: 10.1016/S1872-2067(18)63053-0 shu

Three-dimensional lily-like CoNi₂S₄ as an advanced bifunctional electrocatalyst for hydrogen and oxygen evolution reaction

School of Chemistry and Materials Science, Jinan University, Guangzhou 510632, Guangdong, China

Received Date: 24 January 2018
Revised Date: 27 February 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21376105, 21576113).

Designing low-cost, highly efficient, and stable bifunctional electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is of vital significance for water splitting. Herein, three-dimensional lily-like CoNi₂S₄ supported on nickel foam (CoNi₂S₄/Ni) has been fabricated by sulfuration of the Co-Ni precursor. As expected, CoNi₂S₄/Ni possesses such outstanding electrocatalytic properties that it requires an overpotential of only 54 mV at 10 mA cm^-2 and 328 mV at 100 mA cm^-2 for HER and OER, respectively. Furthermore, by utilizing the CoNi₂S₄/Ni electrodes as bifunctional electrocatalysts for overall water splitting, a current density of 10 mA cm^-2 can be obtained at a voltage of only 1.56 V.
- Bifunctional electrocatalyst,
- Hydrogen evolution reaction,
- Oxygen evolution reaction,
- Lily-like CoNi₂S₄,
- Overall water splitting
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Three-dimensional lily-like CoNi₂S₄ as an advanced bifunctional electrocatalyst for hydrogen and oxygen evolution reaction