Novel fluidised cathode approach for the electrochemical reduction of tungsten oxide in molten LiCl-KCl eutectic

被引：23

作者：

Abdulaziz, Rema ^{[1
]}

Brown, Leon D. ^{[1
]}

Inman, Douglas ^{[1
]}

Simons, Stefaan ^{[1
]}

Shearing, Paul R. ^{[1
]}

Brett, Daniel J. L. ^{[1
]}

机构：

[1] UCL, Electrochem Innovat Lab, Dept Chem Engn, London WC1E 7JE, England

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2014年 / 41卷

基金：

英国工程与自然科学研究理事会;

关键词：

Fluidised cathode; Molten salt; Electrochemical reduction; Tungsten oxide; FFC CAMBRIDGE PROCESS; TITANIUM-DIOXIDE; CALCIUM-CHLORIDE; COPPER DEPOSITION; BED ELECTRODE; FUEL-CELL; PRECURSORS; DIFFUSION; REMOVAL; PATHWAY;

D O I：

10.1016/j.elecom.2014.01.022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical reduction of metal oxides is an important step in refractory metal production and in the pyroprocessing of spent nuclear materials. The FFC Cambridge process has revolutionised molten salt electrolysis; however, it has quite a low efficiency and has diffusion and oxide build-up issues. The fluidised cathode approach eliminates some of these issues. To illustrate the process, the electroreduction of tungsten oxide particles from a LiCl-KCl eutectic is demonstrated. Cyclic voltammetric measurements were taken and show the main reduction peak for WO3 to W to be at -2.135 V (vs. Ag/Ag+) at an operating temperature of 450 degrees C. Chronoamperometry shows an increase in current associated with an increasing current collector size and the spalling of deposited W from the surface. SEM and EDS analyses of the product reveal the deposit to be pure W. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：44 / 46

页数：3

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