Details

Autor(en) / Beteiligte

• Wang, Ji
• Li, Mei
• Han, Wei
• Liu, Zhi-Yixiong
• Yang, Xiao-Guang
• Sun, Yang
• Zhang, Mi-Lin

Titel

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

Ist Teil von

• Rare metals, 2022-04, Vol.41 (4), p.1394-1402

Ort / Verlag

Beijing: Nonferrous Metals Society of China

Erscheinungsjahr

2022

Link zum Volltext

Quelle

SpringerLink

Beschreibungen/Notizen

• 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.