Cobalt Phosphate Interlayer to Enhance the Activity and Stability of the NiFe-LDH Anode in an Anion Exchange Membrane Water Electrolyzer

at the cell voltage of only 1.709 V, and it stably operated up to 1200 h. It is found that the CoPi interlayer modulated the morphology of the NiFe-LDH nanosheet arrays and also tuned the electronic structure of the NiFe-LDH. The Ni in NiFe-LDH/CoPi/NF shows a higher valence state, thereby promoting its activity, and also shows a low dissolution rate, thereby promoting its stability.