Electrochemical Studies of LaCl3 and GdCl3 Dissolved in Fused LiCl‐KCl
Electrochemical Studies of LaCl3 and GdCl3 Dissolved in Fused LiCl‐KCl
复制标题
DOI：
10.1149/1.1392604
复制
发表时间：
1999-11
影响因子：
3.9
通讯作者：
F. Lantelme;Y. Berghoute
中科院分区：
文献类型：
--
作者：
F. Lantelme;Y. Berghoute
熔融体系作为获得强氧化或还原元素（例如氟、碱金属、碱土金属和铝）的反应介质非常重要。最近，熔盐电化学已用于制备难熔金属，为固态金属沉积开辟了道路。通过 LaCl{sub 3} 或 GdCl{sub 3} 形成电池的电磁力 (emf) 测量来确定混合熔融 LiCl-KCl 中的氯化镧或氯化钆溶液的热力学性质。 380 至 590 C 之间电动势的温度依赖性用于计算溶解的 LaCl{sub 3} 或 GdCl{sub 3} 的吉布斯能量和形成焓。采用循环伏安法和计时电位法研究了La(III)和Gd(III)在钨电极上的还原过程。
Molten systems are important as reaction media for the winning of strong oxidation or reducing elements such as fluorine, alkaline, and alkaline earth metals and aluminum. Recently, fused salt electrochemistry has been used for the preparation of refractory metals opening the way to the deposition of metals in solid state. The thermodynamic properties of solutions of lanthanum or gadolinium chlorides in mixed molten LiCl-KCl were determined by electromagnetic force (emf) measurements of LaCl{sub 3} or GdCl{sub 3} formation cells. The temperature dependence of the emf between 380 and 590 C was used to calculate the Gibbs energy and the enthalpy of formation of dissolved LaCl{sub 3} or GdCl{sub 3}. The electrode processes of La(III) and Gd(III) reduced on a tungsten electrode were investigated by cyclic voltammetry and chronopotentiometry.