Abstract

PAL, Rahul  and  ANTHONYSAMY, S.. Insights into the Electrochemistry of Deposition of Boron from KCl-KF-NaBF4 Melt. Port. Electrochim. Acta [online]. 2015, vol.33, n.2, pp.125-135. ISSN 0872-1904.  https://doi.org/10.4152/pea.201502125.

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 Vs^-1) and irreversibly at higher scan rates (> 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 was 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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