Abstract

PALA, Rahul  and  ANTHONYSAMY, S.. Insights into the Electrochemistry of the Deposition of Boron from KCl-KF-NaBF₄ Melt. Port. Electrochim. Acta [online]. 2014, vol.32, n.6, pp.405-415. ISSN 0872-1904.  https://doi.org/10.4152/pea.201406405.

Electrochemical reduction of boron from boron containing fluoroborate species present in KCl (81.54 mol%)-KF (18.45 mol%)-NaBF₄ (1.67 × 10^-4 mol cm^-3) melt on a platinum electrode was studied by cyclic voltammetry and chronoamperometry. These studies were carried out over the temperature range 1073 - 1123 K. Boron-containing electroactive species is shown to reduce quasi-reversibly at low scan rates (v < 0.1 V s^-1) and irreversibly at higher scan rates (v > 0.1 V s^-1) through a single-step three-electron process (B(III) + 3e^- → B). The transfer and diffusion coefficients of the electroactive species were measured for sodium fluoroborate in KCl-KF melt over the temperature range 1073 - 1123 K.

Keywords : Sodium fluoroborate; Cyclic voltammetry; Chronoamperometry; Diffusion coefficient; Melt.

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