共晶体系
铀
交换电流密度
电解质
电化学
电流密度
极化(电化学)
电极
无机化学
分析化学(期刊)
钨
材料科学
电流(流体)
化学
冶金
热力学
合金
物理化学
塔菲尔方程
物理
量子力学
色谱法
作者
K.R. Kim,Sun Yeong Choi,J.G. Kim,Seungwoo Paek,W.I. Goh
出处
期刊:International Journal of Electrochemical Science
[ESG]
日期:2015-09-01
卷期号:10 (9): 7660-7670
被引量:12
标识
DOI:10.1016/s1452-3981(23)17379-2
摘要
The objective of this work is to use electrochemical techniques to quantify the electrode reaction rate of some rare-earth elements and uranium in a LiCl-KCl eutectic electrolyte at 500oC. The exchange current densities of the oxidation-reduction couples of M3+/M0 (La3+/La0, Ce3+/Ce0, Pr3+/Pr0, Nd3+/Nd0, Gd3+/Gd0, Y3+/Y0, U3+/U0) on a tungsten electrode were measured by applying a linear polarization resistance technique. A region of linear dependence of potential on applied current could be found to describe the reaction rate of oxidation-reduction system. From these measurements, the estimated exchange current density was 0.38 mA/cm2 for uranium, and was within the range of 0.27 to 0.38 mA/cm2 for rare-earth elements.
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