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Abstract
The linear sweep voltammetric study of Ni in molten LIF-NaF-KF eutectic was carried out at temperatures between 470 and 540°C by using an indicator electrode made of Pt bead. The observed reduction wave for Ni(II) was considered due to the reversible two-electron reduction, Ni(II) → Ni(0). Nickel(II) can be determined in molten LIF-NaF-KF eutectic with the detection limit of 4 x 10−4 mol/dm3. The diffusion coefficient of Ni(II) was found to be 5 x 10−6 cm2/S at 500°C and its activation energy, (5.86 ± 1.67) x 10−4 J/mol.