The electrocatalytic activity for hydrogen evolution reaction(HER)is strongly correlated with active edge sites and resulting efficient charge transport capability.Here,we presented a facile two-step method to synthes...The electrocatalytic activity for hydrogen evolution reaction(HER)is strongly correlated with active edge sites and resulting efficient charge transport capability.Here,we presented a facile two-step method to synthesize 3 D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper(CFP)skeleton.The nanostructures distributed on CFP uniformly and composed of 2 D nanosheets,which would provide plenty of active edge sites and increase the HER activity.Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 m V,a small Tafel slope of 67 m V/dec,and a high double-layer capacity of 53.7 m F/cm2 in 1 M KOH aqueous solution.In addition,the HER activity is almost unchanged after galvanostatic technique with applied current densities of10 m A/cm2 for 20 h.展开更多
基金financially supported by Key Research and Development Project of Hainan Province(No.ZDYF2018106)National Natural Science Foundation of China(Nos.51762012,51461014,and 51862006)Key Laboratory Open Project Fund of Hainan University(2018008).
文摘The electrocatalytic activity for hydrogen evolution reaction(HER)is strongly correlated with active edge sites and resulting efficient charge transport capability.Here,we presented a facile two-step method to synthesize 3 D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper(CFP)skeleton.The nanostructures distributed on CFP uniformly and composed of 2 D nanosheets,which would provide plenty of active edge sites and increase the HER activity.Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 m V,a small Tafel slope of 67 m V/dec,and a high double-layer capacity of 53.7 m F/cm2 in 1 M KOH aqueous solution.In addition,the HER activity is almost unchanged after galvanostatic technique with applied current densities of10 m A/cm2 for 20 h.
