Electrodeposition of In-Sn Alloys in EMI-BF4-Cl Molten Salts

EMI-BF4-Cl melt has some attractive properties such as a low melting point below room temperature, a low reactivity to air and moisture, a wide electrochemical window of ca. 3V, and a high solubility of metal chlorides. The last one is appropriate to study the electrode reaction of various kinds of metal ions, which are difficult to dissolve in other room temperature molten salts except chloroaluminate melts. Therefore, we have been investigating the electrochemistry of metal ions such as In(III), Sn(II), Pb(II), and Sb(III) in the EMI-BF4-Cl melt, and the results have demonstrated that such metals are each electrodeposited. In this study, the possibility of the electrodeposition of In-Sn alloys was examined.