Citation: Mi Lin Zhang, Zeng Chen, Wei Han, Yan Zhuo Lv, Jun Wang. Electrochemical formation and phase control of Mg-Li alloys[J]. Chinese Chemical Letters, ;2007, 18(9): 1124-1128. doi: 10.1016/j.cclet.2007.07.014 shu

Electrochemical formation and phase control of Mg-Li alloys

Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China

Received Date: 30 March 2007

Fund Project: The authors wish to extend thanks to professors D.Y.Qiu and L.Y.He for their interest and useful suggestions.This work was financially supported by 863 project of Ministry of Science and Technology of China (No.2006AA03Z510),the Scientific Technology Project of Heilongjiang Province (No.GC06A212) and the fund from Harbin Municipal Science&Technology Bureau (No.2006PFXXG006).We also appreciate the support of the Key Laboratory of Superlight Materials&Surface Technology,Ministry of Education.

The electrochemical formation of Mg-Li alloys was investigated in a molten LiCl-KCl (58-42 mol%) eutectic melt at 723 K. The cyclic voltammogram for a Mo electrode showed that the electroreduction of Li⁺ proceeds in a single step and the deposition potential of Li metal was -2.40 V (vs. Ag/AgCl). For Mg electrode, the electroreduction of Li⁺ takes place at less cathodic potential than that at the Mo electrode which was caused by the formation of Mg-Li alloys. Phase of the deposited Mg-Li alloys could be controlled by the electrolysis potential, and the samples were characterized by X-ray diffraction and scanning electron microscopy. The results showed that α-Mg and β-Li phases were obtained at -2.35 and -2.55 V, respectively.
- LiCl-KCl,
- Molten salt,
- Electrodeposition,
- Mg-Li alloy
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