Electrochemical co-reduction of holmium and magnesium ions in eutectic LiCl–KCl salts

The electrochemical co-reduction of Ho(III) and Mg(II) ions was investigated on Mo electrode in eutectic LiCl–KCl salts at temperature of 773 K using various electrochemical techniques. Cyclic voltammogram (CV) and square wave voltammogram exhibit three reduction peaks corresponding to the reduction...

Full description

Saved in:
Bibliographic Details
Published in:Rare metals 2022-04, Vol.41 (4), p.1394-1402
Main Authors: Wang, Ji, Li, Mei, Han, Wei, Liu, Zhi-Yixiong, Yang, Xiao-Guang, Sun, Yang, Zhang, Mi-Lin
Format: Article
Language:English
Subjects:
Biomaterials
Chemistry and Materials Science
Circuits
Electrodes
Electrolysis
Energy
Eutectic temperature
Holmium
Intermetallic compounds
Lithium chloride
Magnesium
Materials Engineering
Materials Science
Metallic Materials
Molten salts
Nanoscale Science and Technology
Physical Chemistry
Potassium chloride
Square waves
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The electrochemical co-reduction of Ho(III) and Mg(II) ions was investigated on Mo electrode in eutectic LiCl–KCl salts at temperature of 773 K using various electrochemical techniques. Cyclic voltammogram (CV) and square wave voltammogram exhibit three reduction peaks corresponding to the reduction of Ho(III) on pre-deposited Mg electrode, whose potentials are more positive than that of Ho on Mo electrode because of the formation of Mg-Ho intermetallic compounds by co-reduction of Ho(III) and Mg(II) ions. Meanwhile, chronopotentiometry and open-circuit chronopotentiometry were used to explore the electrochemical formation of Mg–Ho intermetallics. Mg–Ho alloys were produced by galvanostatic electrolysis at the current of 1.5 A for different electrolysis durations. Ho 5 Mg 24 , HoMg 2 and HoMg intermetallic compounds were acquired and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS). The results indicate that Mg–Ho intermetallic compounds, Ho 5 Mg 24 , HoMg 2 and HoMg, could be prepared by molten salts electrolysis.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-018-1157-0