Huang, Co-Cu-P nanosheet-based open architecture for high-performance oxygen evolution reaction. Wang, Key components and design strategy of the membrane electrode assembly for alkaline water electrolysis.

Tafel slope, contact angles, and EIS tests reveal that the synthesized FeCoNi(OH) x/Ni mesh shows favorable kinetics, super hydrophilic surface, and fast bubble detachment, ultimately reducing the OER overpotential and promoting electrocatalytic activity. Moreover, when installed in a single cell of an alkaline electrolysis cell, the FeCoNi(OH) x/Ni mesh electrode cell voltage is 2.003 V at 8000 A m −2, much lower than the Ni mesh (2.224 V) and Raney Ni/Ni mesh (2.086 V), demonstrating excellent OER performance. Under the condition of 50 mA cm −2, FeCoNi(OH) x/Ni mesh exhibits excellent stability for 80 h. In three-electrode tests, the FeCoNi(OH) x/Ni mesh has an overpotential of 138 mV at 10 mA cm −2, much lower than that of Ni mesh (341 mV) and Raney Ni/Ni mesh (277 mV). In this work, a highly efficient and stable OER catalyst with a layered structure, in which layered hydroxides of FeCoNi(OH) x are prepared on a Ni mesh substrate by electrodeposition. The development of efficient and durable oxygen evolution reaction (OER) catalysts is of great significance for the application of high-efficiency alkaline water electrolysis hydrogen production technology.