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The sub-micrometer lead powders were electrodeposited on a mild steel (MS) substrate in PbS-containing (10–50 mM) choline chloride–urea deep eutectic solvent (ChCl–urea DES) at 353 K and 2.5 V. The electrochemical behaviors of the Pb(II)/Pb on MS and glass carbon electrodes were determined by cyclic voltammetry and chronoamperometry measurement. It indicates that the reduction of Pb(II) is a quasi-reversible...