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    • Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl2·6H2O Dissolved in Ethylene Glycol
    Authors: Thuy-Linh Phi; Son Tang, Nguyen; Nguyen, Van Hieu; Manuel, Palomar-Pardavé; Perla Morales-Gil; Tu, Le Manh;  Advisor: -;  Co-Author: - (2022)

    This work deals with nickel electronucleation and growth processes onto a glassy carbon electrode from NiCl2·6H2O dissolved in ethylene glycol (EG) solutions with and without 250 mM NaCl as a supporting electrolyte. The physicochemical properties of EG solutions, namely, viscosity and conductivity, were determined for different Ni(II) concentrations. From cyclic voltammetry, it was found that in the absence of the supporting electrolyte, the cathodic efficiency of Ni electrodeposition is about 88%; however, in the presence of the supporting electrolyte, the cathodic efficiency was reduced to 26% due to water (added along the supporting electrolyte) reduction on the growing surfaces of...