Nickel (Ni), cobalt (Co) and their alloy have been extensively employed in engineering due to theirmagnetic, chemical, mechanical, physical and electrocatalytic characteristics, which grant resistanceagainst corrosion and heat. Electrodeposition is considered to be a significant and environmentallyfriendly technique for producing Ni, Co and their alloy coatings due to its promising properties. Thecurrent research provides a brief review of the latest studies of different types of Ni, Co, and Ni-Co alloyelectrodeposition from different aqueous baths. This article reviews the effects of various organicadditives in Ni, Co and their alloy electrodeposition processes. Due to the special functions of organicadditives, they are widely used during electrodeposition. The additives usually affect the growth andcrystal building of deposits through their adsorption on the cathode surface. The widenedelectrochemical window, superior thermal stability, negligible or low vapor pressure and theenvironmentally friendly characteristics of ionic liquids (ILs) permit them to be promising replacementsfor traditional, toxic and volatile organic solvents..
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