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
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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.
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