Electrochemical and kinetic analysis of Ce recovery using Ga electrode in LiCl-KCl melt

被引：12

作者：

Ding, Li ^{[1
,2
,3
]}

Yang, Shanxin ^{[2
,3
]}

Yan, Yongde ^{[1
,2
,3
]}

Xue, Yun ^{[2
,3
]}

Ma, Fuqiu ^{[2
,3
]}

Zhu, Kai ^{[1
]}

Liu, Wei ^{[4
]}

Deng, Yuan ^{[4
]}

机构：

[1] Harbin Engn Univ, Minist Educ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Heilongjiang, Peoples R China

[2] Harbin Engn Univ, Yantai Res Inst, Yantai 264006, Shandong, Peoples R China

[3] Harbin Engn Univ, Grad Sch, Yantai 264006, Shandong, Peoples R China

[4] Inner Mongolia Rare Earth Funct Mat Innovat Ctr, Baotou 014010, Inner Mongolia, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2023年 / 323卷

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

Recovery; Rare earth elements; LiCl-KCl melt; Liquid cathode; Exchange current density; RARE-EARTH-ELEMENTS; MOLTEN-SALT; THERMODYNAMIC PROPERTIES; UNDERPOTENTIAL DEPOSITION; CO-REDUCTION; URANIUM; CERIUM; BEHAVIORS; ALUMINUM; ALLOYS;

D O I：

10.1016/j.seppur.2023.124492

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Electrode material is an obstacle to the application of molten salt electrolysis in Ce recovery. Liquid Ga is a potential candidate for the cathode, but the corresponding reaction process on the electrode in the melt has yet to be fully understood and systematically studied. Herein, the electrochemical reaction and the kinetics of recovering Ce using Ga electrodes were investigated by various electrochemical methods. A concentration-dependent test of the co-deposition reaction revealed the continuous alloying process of reduced Ce. The electrolytic reduction of Ce ions on liquid Ga was studied by electrochemical impedance spectroscopy (EIS). The result shows that the reaction is controlled by diffusion. In addition, some important parameters such as exchange current density, activity coefficient and solubility were determined by pulsed electrolysis and coulomb titration, allowing a preliminary assessment of the electrolytic extraction of Ce on the Ga electrode.

引用

页数：9

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