Electrodeposition of Bright Nickel from Liquid Ammonia Solution Containing Chloride

Abstract

The present work aims to prepare bright nickel from liquid ammonia solution containing chloride. The effect of sodium benzenesulfinate concentration on the current efficiency, electrochemical nucleation behavior, crystallographic orientations and surface morphology at macro and micro level of the electrodeposited nickel were studied systematically. Results show that the introduction of sodium benzenesulfinate can efficiently transfer the black nickel to smooth, compact and dense nickel. X-ray diffraction revealed that the (111) plane is the most preferred plane and is not affected by the presence of SBS in the electrolyte. Electrochemical measurements show that the deposition potential of nickel moves to more negative direction and the cathodic current decreases with the presence of sodium benzensulfonate. Moreover, sodium benzenesulfinate has a great influence on the crystallization and nucleation growth behavior of nickel, making the nucleation mechanism transfer from instantaneous to progressive and therefore reducing the nucleation rate.

The Contribution of Heteroatoms in Amide Derivatives with an Identical Structure on Nickel Electrodeposits

“…The great enhancement of the anodic peaks may have resulted from the fast oxidation of nickel deposits and the change in the crystal structure induced by TU. This phenomenon was also observed by Wu,4 who studied the effect of sodium benzenesulfinate on nickel electrodeposition from a liquid ammonia solution containing chloride. The potential difference between the nucleation potential (E nu ) and cross overpotential (E co ) is the nucleation overpotential (NOP), which can be regarded as an indicator of the extent of cathodic polarization.…”

“…For instance, Wu et al introduced sodium benzenesulfinate (SBS) to an ammoniacal solution and found that SBS efficiently improved the formation of smooth and dense nickel. 4 Lu found that dodecyl sodium sulfate (SDS) can act as a wetting agent to decrease cathode polarization and eliminate the pitting of nickel deposits from sulfate systems. 5 The use of additives in electrodeposition is extremely important, due to the special roles that additives play in metal deposition.…”

Electrodeposition of Ni‐P alloy from deep eutectic solvent and its electrocatalytic activity toward hydrogen evolution reaction

“…Nickel and its alloys, with the merits of low-cost, accessibility, and excellent catalytic activity, are deemed as alternative candidates for precious metal catalysts. [1,[9][10][11][12][13][14][15][16][17] Compared with the known Ni-Mo alloys, Ni-P alloys outperform because the negatively charged P not only easily captures the positively charged protons to activate the HER but also improves the corrosion resistance of the electrode. [18][19][20][21] As is widely accepted, Ni-P alloys are commonly fabricated by electroless plating, where the bath solution is based on the use of the aqueous solution.…”

Isopiestic Measurements of Osmotic and Activity Coefficients of NiCl2–NH4Cl–H2O Systems at 308.15 K

“…NiCl 2 and NH 4 Cl are important and familiar compositions in chloride hydrometallurgy for nickel and other valuable metals. Wu studied the electrodeposition of bright nickel from ammonia solution with chloride and disclosed the deposition behaviors of nickel with the change of solution concentration . Therefore, the NiCl 2 –NH 4 Cl–H 2 O system is important in hydrometallurgy and need to be further studied.…”