Efficient electrochemical water splitting catalyzed by electrodeposited NiFe nanosheets film

Cost-effective bifunctional oxygen- and hydrogen-evolving electrocatalysts made from earth-abundant elements are crucial for efficient water splitting. In this communication, we report a versatile and one-step electrodeposition of NiFe nanosheets film on Ni foam (NiFe/NF) as a bifunctional catalytic material with high activity and stability for overall water splitting in basic electrolytes. The two-electrode electrolyzer using NiFe/NF as both anode and cathode can afford current density of 10 mA cm(-2) at a cell voltage of 1.64 V, which stimulates the design and development of transition metal alloy nanostructures as attractive bifunctional catalysts for electrochemical production of hydrogen fuels. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.