Electrochemical and thermodynamic properties of ytterbium and formation of Zn–Yb alloy on liquid Zn electrode
| Autor: | Yong De Yan, Mi Lin Zhang, Jia−Ning Zheng, Wei Han, De−Qiang Ji, Pu Wang, Hong−Jun Wu, De−Bin Ji |
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| Rok vydání: | 2019 |
| Předmět: |
Ytterbium
Nuclear and High Energy Physics Materials science Alloy Intermetallic Analytical chemistry chemistry.chemical_element 02 engineering and technology engineering.material Electrochemistry 01 natural sciences 010305 fluids & plasmas law.invention symbols.namesake law 0103 physical sciences General Materials Science Electrolysis 021001 nanoscience & nanotechnology Gibbs free energy Nuclear Energy and Engineering chemistry Electrode symbols engineering Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Journal of Nuclear Materials. 517:157-164 |
| ISSN: | 0022-3115 |
| Popis: | The electrochemical behavior of Yb(III) in LiCl–KCl–YbCl3 melts on W and liquid Zn electrodes was studied at 813 K. On the W electrode, the diffusion coefficient of Yb(III) was determined to be 3.38 × 10−5 cm2 s−1. The apparent standard Gibbs energy of the reaction: YbCl 2 + 1 / 2 Cl 2 → YbCl 3 in LiCl–KCl melts was calculated. On the liquid Zn electrode, the results from cyclic voltammetry, square wave voltammetry and open circuit chronopotentiometry indicated that two electrochemical signals corresponding to the formation of two kinds of Zn–Yb intermetallic compounds were observed. Ytterbium was extracted in the form of Zn–Yb alloys by galvanostatic electrolysis on liquid Zn electrode. The results from XRD show that three kinds of Zn-Yb intermetallic compounds were formed. Moreover, the different phases of Zn–Yb alloys could be controlled by adjusting the concentrations of YbCl3. |
| Databáze: | OpenAIRE |
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