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| Direct Electrochemical Preparation of Ce-Ni/Zn/Bi Alloy from Mixture Oxides in LiCl Molten Salt |
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Received:April 12, 2018
Revised:April 16, 2018
Accepted:April 17, 2018
Published Online:August 20, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.09.015 |
| KeyWord:electrochemical reduction; Ce-Ni/Bi/Zn intermetallic compound; LiCl molten salt |
| Author | Institution |
| PING Xin-yu |
南华大学 核科学技术学院 |
| LIU Kui |
中国科学院高能物理研究所 核能放射化学实验室 |
| SHI Wei-qun |
中国科学院高能物理研究所 核能放射化学实验室 |
| ZHAO Xiu-liang |
南华大学 核科学技术学院 |
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| Abstract: |
| Intermetallic compounds of Ce-Ni, Ce-Bi and Ce-Zn were prepared from their mixture oxides (CeO2-5NiO, CeO2-2.5Bi2O3 and CeO2-5ZnO) by constant voltage electrolysis in LiCl molten salt at 923 K. In order to verify the feasibility of electrochemical reduction of these oxides, theoretical decomposition voltage was calculated by Standard Gibbs Free Energy, and electrochemical reduction behaviors of these oxides and mixture oxides were investigated by Cyclic Voltammetry (CV) measurement. The results show that electrochemical reductions of NiO, Bi2O3 and ZnO powder at 3.2 V for 4 h can be readily realized at lower voltage, which will facilitate reduction of CeO2 powder with high thermodynamic stability and poor conductivity. Electrolytic product is CeNi5/Ni, CeBi/Bi and CeZn5/Ce3Zn22/CeZn3, respectively. Morphology of electrolytic products is flocculent, accumulative and lumpy, respectively. |
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