Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5453963 | Journal of Nuclear Materials | 2017 | 11 Pages |
Abstract
An electrochemical study of manganese chloride in molten salt mixtures of eutectic LiCl-KCl was carried out using a variety of electrochemical methods in a high temperature cell including cyclic voltammetry (CV), chronopotentiometry (CP), chronoamperometry (CA), and open circuit potentiometry. Single step reduction from Mn2+ to Mn(0) was observed on both W and Mo working electrodes. Using a combination of these methods, measurements were made of activity coefficient and diffusion coefficient for MnCl2 in LiCl-KCl as a function of concentration (3.54Â ÃÂ 10â4 to 3.60Â ÃÂ 10â3Â mol fraction of MnCl2) at 773K. From OCP measurements, values for activity coefficient varied from 0.014 to 0.0071. Diffusion coefficients varied with concentration and differed based on measurement method (CV, CA, or CP). Based on cyclic Mn(II) ranged from 1.1 to 2.8Â ÃÂ 10â5Â cm2/s depending on concentration.
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Authors
D. Horvath, D. Rappleye, P. Bagri, M.F. Simpson,