Searching for efficient nonprecious metal-based catalysts toward oxygen evolution reaction(OER)are of significance for seawater electrolysis.Herein,a core-shell-structured hybrid of cobalt phosphide nanowires@NiFe lay...Searching for efficient nonprecious metal-based catalysts toward oxygen evolution reaction(OER)are of significance for seawater electrolysis.Herein,a core-shell-structured hybrid of cobalt phosphide nanowires@NiFe layered double hydroxide nanosheets grown on conductive nickel foam(CoP@NiFe LDH/NF)is prepared by a feasible approach at low temperature.The charming structure can provide numerous phosphide/hydroxide heterogenous interfaces,expose abundant active sites,and boost elec-tron/mass transfer,synergistically enhancing catalytic OER activity.When employed as an electrocatalyst toward the OER,the resultant CoP@NiFe LDH/NF only requires a small overpotential of 287 mV to pro-vide 300 mA/cm^(2)current density as well as long-time durability in 1.0 mol/L KOH seawater.The regula-tion of electronic states and surface reconstruction synergistically contribute to highly efficient seawater oxidation.This work provides an opportunity to construct efficient and inexpensive electrocatalysts for hydrogen production.展开更多
基金Financial support from the National Natural Science Foundation of China (No.21971086)University Feature Laboratory for Energy Conversion and Nanocatalysis of Shandong Province
文摘Searching for efficient nonprecious metal-based catalysts toward oxygen evolution reaction(OER)are of significance for seawater electrolysis.Herein,a core-shell-structured hybrid of cobalt phosphide nanowires@NiFe layered double hydroxide nanosheets grown on conductive nickel foam(CoP@NiFe LDH/NF)is prepared by a feasible approach at low temperature.The charming structure can provide numerous phosphide/hydroxide heterogenous interfaces,expose abundant active sites,and boost elec-tron/mass transfer,synergistically enhancing catalytic OER activity.When employed as an electrocatalyst toward the OER,the resultant CoP@NiFe LDH/NF only requires a small overpotential of 287 mV to pro-vide 300 mA/cm^(2)current density as well as long-time durability in 1.0 mol/L KOH seawater.The regula-tion of electronic states and surface reconstruction synergistically contribute to highly efficient seawater oxidation.This work provides an opportunity to construct efficient and inexpensive electrocatalysts for hydrogen production.
