The kinetics of uranium, plutonium and americium electrodeposition on steel targets from organic solutions of diphenyl-(N,N-dibutyl) carbamoylmethylphosphine oxide supplemented with the ionic liquid of trihexyltetradecylphosphonium hexafluorophosphate ([PH₄]⁺PF₆ ^-) in ethanol or N,N-dimethylformamide has been studied. When running a process in a dimethylformamide medium, and 0.05 M concentration of [PH₄]⁺PF₆ ^- americium deposition degree exceeds 95 % at the electrolysis time of 2 h. Alpha-spectra resolution of obtained target does not exceed 40 keV.