Sm extraction from a LiCl-KCl melt was carried out by forming alloys on various electrodes, including Al, Ni, Cu, and liquid Zn, and the electrochemical behaviors of the resultant metal products were investigated using different electrochemical techniques. While Sm metal deposition via the conventional two-step reaction process was not noted on the inert electrode, underpotential deposition was observed on the reactive electrodes because of the latter’s depolarization effect. The depolarization effects of the reactive electrodes on Sm showed the order Zn > Al > Ni > Cu. Sm-M (M = Al, Ni, Cu, Zn) alloys were deposited by galvanostatic and potentiostatic electrolysis. The products were fully characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM)-energy dispersive spectrometry (EDS), and the stability of the obtained M-rich compounds was determined. Finally, the relationship between the electrode potential and type of Sm-M intermetallic compounds formed was assessed on the basis of the observed electrochemical properties and electrodeposits.

通过在各种电极（包括Al，Ni，Cu和液态Zn）上形成合金，从LiCl-KCl熔体中提取，然后使用不同的电化学技术研究所得金属产物的电化学行为。尽管在惰性电极上未注意到通过常规两步反应工艺沉积的Sm金属，但由于后者的去极化作用，在反应电极上观察到了欠电位沉积。反应电极对Sm的去极化作用表现为Zn> Al> Ni> Cu。Sm-M（M = Al，Ni，Cu，Zn）合金通过恒电流和恒电位电解沉积。产品通过X射线衍射（XRD）和扫描电子显微镜（SEM）-能量色散光谱（EDS）进行了全面表征，测定得到的富M化合物的稳定性。最后，根据观察到的电化学性能和电沉积来评估电极电势与形成的Sm-M金属间化合物类型之间的关系。