摘要
Developing efficient and inexpensive OER electrocatalysts is a challenge for overall water splitting.Herein,the heterostructured Fe Co LDH@NiCoP/NF nanowire arrays with high performance were rationally designed and prepared using an interface engineering strategy.Benefitting from the special heterostructure between Fe Co LDH and Ni Co P,the as-synthesized Fe Co LDH@Ni Co P/NF electrocatalyst exhibits outstanding OER performance with an exceptionally low overpotential of 206 mV to achieve 20 mA/cm^(2)current density in an alkaline electrolyte.Importantly,a cell constructed using the FeCo LDH@NiCoP/NF electrocatalyst as cathode and anode just needs a voltage of 1.48 V at 10 mA/cm^(2),and shows excellent stability over 80 h.Experimental and theoretical results verified that the introduction of Ni Co P efficiently regulates the electronic structure of Fe Co LDH,which tremendously boosts the conductivity and intrinsic catalytic activity of FeCo LDH@NiCoP/NF electrocatalyst.The present work provides guidance for the preparation of other efficient and cheap electrocatalytic materials.
基金
the financial supports from Natural Science Foundation of China(Nos.91741105,22006120)
Program for Innovation Team Building at Institutions of Higher Education in Chongqing(No.CXTDX201601011)。
