Anomalous diffusion coefficients for W(IV) ion diffusion in NaCl-KCl melt at 700-750°C

A. Lugovskoy; Z. Unger; M. Zinigrad; D. Aurbach

doi:10.4028/www.scientific.net/DDF.297-301.1481

Anomalous diffusion coefficients for W(IV) ion diffusion in NaCl-KCl melt at 700-750°C

A. Lugovskoy, Z. Unger, M. Zinigrad, D. Aurbach

Department of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

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.

Original language	English
Title of host publication	Diffusion in Solids and Liquids V
Publisher	Trans Tech Publications Ltd
Pages	1481-1486
Number of pages	6
Volume	297-301
ISBN (Print)	3908451809, 9783908451808
DOIs	https://doi.org/10.4028/www.scientific.net/DDF.297-301.1481
State	Published - 2010

Keywords

Cyclic voltammetry
Diffusion coefficients
Electrodeposition
Molten chloride

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title = "Anomalous diffusion coefficients for W(IV) ion diffusion in NaCl-KCl melt at 700-750°C",

abstract = "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.",

keywords = "Cyclic voltammetry, Diffusion coefficients, Electrodeposition, Molten chloride",

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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

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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

PB - Trans Tech Publications Ltd

ER -

Anomalous diffusion coefficients for W(IV) ion diffusion in NaCl-KCl melt at 700-750°C

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Keywords

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