The layered transition metal dichalcogenides(TMDs)and transition metal phosphides are low-cost,earth-abundant,and robust electrocatalysts for hydrogen evolution reaction(HER).Integrating them into hybrid nanostructure...The layered transition metal dichalcogenides(TMDs)and transition metal phosphides are low-cost,earth-abundant,and robust electrocatalysts for hydrogen evolution reaction(HER).Integrating them into hybrid nanostructures is potentially promising to further boost the catalytic activity toward HER based on their synergistic effects.Herein,we report a general method for the synthesis of a series of MoSe_(2)-based hybrid nanostructures,including MoSe_(2)-Ni_(2)P,MoSe_(2)-Co_(2)P,MoSe_(2)-Ni,MoSe_(2)-Co,and MoSe_(2)-NiS,by postgrowth of Ni_(2)P,Co_(2)P,Ni,Co,and NiS nanostructures on the presynthesized MoSe_(2) nanosheet-assembled nanospheres,respectively,via a colloidal synthesis method.As a proof-of-concept application,the as-synthesized hybrid nanostructures are used as electrocatalysts for HER,exhibiting high activity and stability in acidic media.Among them,the MoSe_(2)-Co_(2)P composite shows the highest HER activity with an overpotential of 167 mV at 10 mA cm^(-2).展开更多
基金This work was supported by MOE under AcRF Tier 2(ARC 19/15,Nos.MOE2014-T2-2-093,MOE2015-T2-2-057,MOE2016-T2-2-103,and MOE2017-T2-1-162)AcRF Tier 1(2016-T1-001-147,2016-T1-002-051,2017-T1-001-150,and 2017-T1-002-119)+2 种基金Nanyang Technological University under the Start-Up Grant(M4081296.070.500000)in SingaporeS.H.thanks the support from the Fundamental Research Funds for the Central Universities(No.PA2018GDQT0013)in ChinaWe would like to acknowledge the Facility for Analysis,Characterization,Testing and Simulation,Nanyang Technological University,Singapore,for use of their electron microscopy(and/or X-ray)facilities.H.Z.thanks the support from the Innovation and Technology Commission via the Hong Kong Branch of National Precious Metals Material Engineering Research Center and the Start-Up Grant from the City University of Hong Kong.
文摘The layered transition metal dichalcogenides(TMDs)and transition metal phosphides are low-cost,earth-abundant,and robust electrocatalysts for hydrogen evolution reaction(HER).Integrating them into hybrid nanostructures is potentially promising to further boost the catalytic activity toward HER based on their synergistic effects.Herein,we report a general method for the synthesis of a series of MoSe_(2)-based hybrid nanostructures,including MoSe_(2)-Ni_(2)P,MoSe_(2)-Co_(2)P,MoSe_(2)-Ni,MoSe_(2)-Co,and MoSe_(2)-NiS,by postgrowth of Ni_(2)P,Co_(2)P,Ni,Co,and NiS nanostructures on the presynthesized MoSe_(2) nanosheet-assembled nanospheres,respectively,via a colloidal synthesis method.As a proof-of-concept application,the as-synthesized hybrid nanostructures are used as electrocatalysts for HER,exhibiting high activity and stability in acidic media.Among them,the MoSe_(2)-Co_(2)P composite shows the highest HER activity with an overpotential of 167 mV at 10 mA cm^(-2).
