In this work, a study of the electrodeposition of Ce onto an aluminum 6061 alloy was carried out from Ce salt dissolution in a deep eutectic solvent formed by choline chloride and ethylene glycol at 70 °C, to increase the alloy’s corrosion protection in saline media (3.5% NaCl). In order to corroborate the CeO₂ deposit, a surface characterization was carried out by SEM, XPS and EDX, which corroborated the presence of 41.33% of Ce deposited on the Al alloy after applying a potential of -1.45 V for 3000 seconds. Electrochemical impedance spectroscopy (EIS) led to determining the corrosion resistance of the modified material and the corrosion inhibition efficiency of 92%, concerning the blank in 3.5% NaCl.