Relationship between equilibrium potential and radius of lanthanides electrolyzed on the zinc cathode  

作　　者：Peng Li Milin Zhang Debin Ji Min Qiu Li Liu 

机构地区：[1]Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China [2]College of Science,Heihe University,Heihe 164300,China

出　　处：《Chinese Journal of Chemical Engineering》2019年第12期3027-3035,共9页中国化学工程学报（英文版）

摘　　要：The electrochemical behavior of lanthanide elements deposited on liquid zinc cathodes was studied using cyclic voltammetry(CV)and open circuit chronopotentiometry(OCP).We observed a"bimodal effect"in the equilibrium deposition potentials of zinc with lanthanides.A mathematic equation is derived to illustrate the relationship between the equilibrium potential of the intermetallic compounds formed by lanthanide elements and zinc and their atomic radius.This equation is not only applicable to lanthanide elements but also hold for other elements such as alkali metal lithium,alkaline earth metal magnesium,calcium and transition metal niobium,which have crucial theoretical significance for the electrolysis of intermetallic compounds,the separation,and extraction of metals.The electrochemical behavior of lanthanide elements deposited on liquid zinc cathodes was studied using cyclic voltammetry(CV) and open circuit chronopotentiometry(OCP). We observed a "bimodal effect" in the equilibrium deposition potentials of zinc with lanthanides. A mathematic equation is derived to illustrate the relationship between the equilibrium potential of the intermetallic compounds formed by lanthanide elements and zinc and their atomic radius. This equation is not only applicable to lanthanide elements but also hold for other elements such as alkali metal lithium, alkaline earth metal magnesium, calcium and transition metal niobium,which have crucial theoretical significance for the electrolysis of intermetallic compounds, the separation, and extraction of metals.

关 键 词：EQUILIBRIUM POTENTIAL ELECTROLYSIS MOLTEN SALTS Mathematical Grading rule Reduction 

分 类 号：O646.5[理学—物理化学]