Electrochemical water splitting is a promising technology for the sustainable production of green hydrogen. Large-scale hydrogen production demands efficient electrocatalysts to continuously operate at large current densities. Catalyst deterioration and its peel-off are major concerns at large current densities, resulting in subpar performance. Herein, we utilized acoustic cavitation-assisted electrodeposition to synthesize highly efficient and robust NiFe and NiMn oxyhydroxide catalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. The acoustic cavitation process led to the development of a uniform nanoscale structure, partial amorphization, and the formation of oxygen vacancies, likely as a result of high-strain deformation. The synthesized catalysts demonstrated excellent performance, with very low overpotentials of 285 and 189 mV at 1000 mA/cm