研究150℃下采用二元室温离子液体中电化学还原五氯化钼制备金属钼。该室温离子液体是二(三氟甲基磺酸酰)亚胺锂(LiTFSI)和二(三氟甲基磺酸酰)亚胺铯(CsTFSI)的共晶熔体(共晶点组成:摩尔比为0.07:0.93;共晶点温度为112℃)。循环伏安法结合SEM-EDAX和XPS分析表明,在150℃可以在镍基板上电沉积得到金属钼。采用恒电流电解和脉冲电流电解的条件下,镀层的质量得到改善。
The electroreduction of MoCl5 was performed in the binary room temperature ionic liquid,lithium bis[(tri-fluoromethyl) sulfony]amide (LiTFSI) and cesium bis[(tri-fluoromethyl)sulfony]amide (CsTFSI) (eutectic point,0.07: 0.93 in mole fraction;m.p.,112 ℃) at 150 ℃ for the sake of electrodeposition of molybdenum. Analyses from cyclic voltammetry complemented by SEM-EDAX and XPS show that metallic molybdenum is electrodeposited on nickel substrate in the ionic liquid LiTFSI-CsTFSI containing MoCl5 at 150 ℃. Quality of the deposits is improved by using galvanostatic electrolysis and pulsed current electrolysis.