高等学校化学学报Issue(12)：2662-2667,6.DOI:10.7503/cjcu20140405
LiCl-KCl熔盐体系中镨（Ⅲ）在镍电极上的电化学行为
Electrochemical Behavior of Pr(Ⅲ) in the LiCl-KCl Melt on a Ni Electrode
摘要
Abstract
The electrochemical behavior of Pr (Ⅲ) on a Ni electrode in the LiCl-KCl melt and the alloying mechanism of Pr-Ni alloys were investigated by cyclic voltammetry, square wave voltammetry, chronopoten-tiometry and open-circuit chronopotentiometry. Cyclic voltammetry and square wave voltammetry experiments indicate that the reduction of Pr(Ⅲ) ions into Pr metal occur in a single step with three electrons exchanged. Compared with the cyclic voltammograms on an inert Mo electrode, four reduction peaks are observed, which indicates the under-potential deposition of Pr (Ⅲ) on the reactive Ni electrode due to the formation of Pr-Ni intermetallic compounds. The Pr-Ni alloys obtained by potentiostatic electrolysis were characterized by X-ray diffraction(XRD) and scanning electron micrograph-energy dispersive spectrometry(SEM-EDS). The results show that only one Pr-Ni intermetallic compound, i. e. PrNi2 , PrNi3 , Pr2 Ni7 or PrNi5 , is obtained at each po-tential, respectively. This process can also be used for other electrochemical formation of lanthanide-Ni alloys.关键词
电化学行为/欠电位沉积/恒电位电解/镨-镍金属间化合物Key words
Electrochemical behavior/Under-potential deposition/Potentiostatic electrolysis/Pr-Ni interme-tallic compound分类
化学化工引用本文复制引用
李梅,李炜,韩伟,张密林,颜永得..LiCl-KCl熔盐体系中镨（Ⅲ）在镍电极上的电化学行为[J].高等学校化学学报,2014,(12):2662-2667,6.基金项目
国家自然科学基金(批准号:21271054,21173060)、国家自然科学基金重大研究计划项目(批准号:91326113,91226201)和中央高校基本科研业务经费(批准号:HEUCF201403001)资助.覮 Supported by the National Natural Science Foundation of China(Nos.21271054,21173060), the Major Research Plan of the National Natu-ral Science Foundation of China ( Nos.91326113,91226201) and the Fundamental Research Funds for the Central Universities, China ( No. HEUCF201403001) （批准号:21271054,21173060）
