NiFe-based non-precious-metal catalysts are promising substitutes for noble-metal-based catalysts due to their outstanding electrochemical performance and endurance.Herein,a NiFe-based MOF supported on Ni foam was des...NiFe-based non-precious-metal catalysts are promising substitutes for noble-metal-based catalysts due to their outstanding electrochemical performance and endurance.Herein,a NiFe-based MOF supported on Ni foam was designed to obtain good OER and HER activities in alkaline media.Thanks to the 3-D hierarchical layer structure distributed on Ni foam,the high exposure of active sites,and the good conductance,as-obtained NiFe-MOF-5 presented advantages for its use in electrochemical catalysis.As a result,an overpotential of 168 mV at 10 mA cm^(−2)for the OER was reached.Moreover,the catalyst only required a cell voltage of 1.57 V at 10 mA cm^(−2)for overall water splitting,and it outperformed most previously reported non-precious-metal electrocatalysts in 1 M KOH.展开更多
基金supported by the China Postdoctoral Science Foundation(2017M612496).
文摘NiFe-based non-precious-metal catalysts are promising substitutes for noble-metal-based catalysts due to their outstanding electrochemical performance and endurance.Herein,a NiFe-based MOF supported on Ni foam was designed to obtain good OER and HER activities in alkaline media.Thanks to the 3-D hierarchical layer structure distributed on Ni foam,the high exposure of active sites,and the good conductance,as-obtained NiFe-MOF-5 presented advantages for its use in electrochemical catalysis.As a result,an overpotential of 168 mV at 10 mA cm^(−2)for the OER was reached.Moreover,the catalyst only required a cell voltage of 1.57 V at 10 mA cm^(−2)for overall water splitting,and it outperformed most previously reported non-precious-metal electrocatalysts in 1 M KOH.
