Ru/NiFe LDH/Ni Foam催化剂的制备及全解水性能研究

Preparation and Complete Water Splitting Performances of Ru/NiFe LDH/Ni Foam Catalyst

通过水热法和一步还原法制备自支撑三维立体结构的Ru/NiFe LDH/Ni Foam双功能催化剂.Ru/NiFe LDH/Ni Foam催化剂在1M KOH的介质中,析氧反应(OER)在电流密度为10 mA·cm^(-2)的过电位为228 mV,析氢反应(HER)在电流密度为10 mA·cm^(-2)的过电位为66 mV,在全解水两电极体系中在10 mA·cm^(-2)的电流密度下电位为1.70 V.

A self-supporting three-dimensional structure Ru/NiFe LDH/Ni Foam bifunctional catalyst was prepared by hydrothermal and one-step reduction methods.Because Ru/NiFe LDH/Ni foam has a three-dimensional structure,this array-type three-dimensional structure is conducive to gas desorption,and a large specific surface area provides more active sites.These characteristics are conducive to improving the catalytic performance of the catalyst.In 1 M KOH medium,the overpotential of the oxygen evolution reaction(OER)of the Ru/NiFe LDH/Ni foam catalyst is 228 mV at a current density of 10 mA·cm^(-2),and the overpotential of the hydrogen evolution reaction(HER)is 66 mV at a current density of 10 mA·cm^(-2).The catalyst has a potential of 1.70 V at a current density of 10 mA·cm^(-2) in a two-electrode system for complete water splitting.