摘要
Electrochemical behavior of Mg, Li and Sn on tungsten electrodes in LiC1-KC1-MgCI2- SnC12 melts at 873 K was investigated. Cyclic voltammograms （CVs） showed that the underpotential deposition （UPD） of magnesium on pre-deposited tin leads to the formation of a Mg-Sn alloy, and the succeeding underpotential deposition of lithium on pre-deposited Mg-Sn alloy leads to the formation of a Mg-Li-Sn alloy. Chronopo- tentiometric measurements indicated that the codepositon of Mg, Li and Sn occurs at current densities more negative than -1.16 A.cm-~. X-ray diffraction （XRD） in- dicated that Mg2Sn phase is formed via galvanostatic electrolysis. The element Mg distributes homogeneously and Sn locates mainly on the grain boundaries in the Mg- Li-Sn alloy.
Electrochemical behavior of Mg, Li and Sn on tungsten electrodes in LiC1-KC1-MgCI2- SnC12 melts at 873 K was investigated. Cyclic voltammograms （CVs） showed that the underpotential deposition （UPD） of magnesium on pre-deposited tin leads to the formation of a Mg-Sn alloy, and the succeeding underpotential deposition of lithium on pre-deposited Mg-Sn alloy leads to the formation of a Mg-Li-Sn alloy. Chronopo- tentiometric measurements indicated that the codepositon of Mg, Li and Sn occurs at current densities more negative than -1.16 A.cm-~. X-ray diffraction （XRD） in- dicated that Mg2Sn phase is formed via galvanostatic electrolysis. The element Mg distributes homogeneously and Sn locates mainly on the grain boundaries in the Mg- Li-Sn alloy.
基金
financially supported by National High Technical Research and Development Programme of China (Nos. 2011AA03A409 and 2009AA050702)
National Basic Research Program of China (No. 2007CB200906)
the National Natural Science Foundation of China (Nos. 21103033,21101040 and 21173060)
the Fundamental Research Funds for the Central Universities
