High-performance Fe-Coe-P alloy catalysts by electroless deposition for overall water splitting, International Journal of Hydrogen Energy

Kaili Sun, Kaihang Wang, Tianpeng Yu, Xin Liu, Guixue Wang,Luhua Jiang, Yuyu Bu,**, Guangwen Xie,*

Keywords: Fe-Co-P alloy ,Electrocatalysis Water ,overall splitting Large-scale

Abstract

At present, it is difficult for electrocatalytic electrode materials with high-Performance to be prepared at low cost and large area under mild conditions. Therefore, we adopt a facile electroless plating method to deposit the FeeCoeP alloys on the nickel foam (NF) with different areas of 1 cm2,4cm,8cm and 16 cm2. The FeeCoeP/NF catalysts exhibit extraordinary catalytic activity for the oxygen evolution reaction (OER) in alkaline media and are comparable to the state-of-the-art IrO2 in 1.0 M KOH, capable of yielding a current density of 10 mA cm-2 at an overpotential of only 250 mV. Furthermore, the FeeCoeP/NF catalysts show efficient activity towards the hydrogen evolution reaction (HER) with an overpotential of 163 mV at j ¼ 10 mA cm-2 as well. Remarkably, when used as both the anode and cathode, a low potential of 1.68 V (vs. RHE) is required to reach the current density of j ¼ 10 mA cm-2, making the FeeCoeP/NF alloys as an active bifunctional electrocatalyst for overall water splitting. The FeeCoeP/NF alloy catalysts with high catalytic activity, facile preparation and low cost would provide a new pathway for the design and large-scale application of high-performance bifunctional catalysts for electrochemical water splitting.

https://doi.org/10.1016/j.ijhydene.2018.11.182