TY - GEN
T1 - Anomalous diffusion coefficients for W(IV) ion diffusion in NaCl-KCl melt at 700-750°C
AU - Lugovskoy, A.
AU - Unger, Z.
AU - Zinigrad, M.
AU - Aurbach, D.
PY - 2010
Y1 - 2010
N2 - The electrodepostion of bi-valent iron, zinc and tungsten (IV) on tungsten electrodes in equimolar NaCl-KCl melt at 700-750°C was studied by Cyclic Voltammetry and Chronoamperometry. While iron (II) and zinc (II) ions demonstrate regular values of diffusion coefficients, which are all in the range of 10-6-10-5 cm2/sec, tungsten (IV) ions diffuse considerably slower. Plausible process mechanisms were proposed, according to which the tungsten (IV) ions form polynuclear ions and these massive species diffuse at considerably more moderate rates.
AB - The electrodepostion of bi-valent iron, zinc and tungsten (IV) on tungsten electrodes in equimolar NaCl-KCl melt at 700-750°C was studied by Cyclic Voltammetry and Chronoamperometry. While iron (II) and zinc (II) ions demonstrate regular values of diffusion coefficients, which are all in the range of 10-6-10-5 cm2/sec, tungsten (IV) ions diffuse considerably slower. Plausible process mechanisms were proposed, according to which the tungsten (IV) ions form polynuclear ions and these massive species diffuse at considerably more moderate rates.
KW - Cyclic voltammetry
KW - Diffusion coefficients
KW - Electrodeposition
KW - Molten chloride
UR - http://www.scopus.com/inward/record.url?scp=77952270261&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/DDF.297-301.1481
DO - 10.4028/www.scientific.net/DDF.297-301.1481
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AN - SCOPUS:77952270261
SN - 3908451809
SN - 9783908451808
VL - 297-301
SP - 1481
EP - 1486
BT - Diffusion in Solids and Liquids V
ER -