Room Temperature Magnesium Electrodeposition from Glyme-Coordinated Ammonium Amide Electrolytes
Room Temperature Magnesium Electrodeposition from Glyme-Coordinated Ammonium Amide Electrolytes
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DOI：
10.1149/2.0731508jes
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发表时间：
2015-01-01
影响因子：
3.9
通讯作者：
Murase, Kuniaki
中科院分区：
文献类型：
--
作者：
Kitada, Atsushi;Kang, Yuu;Murase, Kuniaki
通过将含Mg2+-酰胺的离子液体（IL）与等摩尔glyme （Mg2++IL: glyme = 1:1）混合，制备出挥发性低、无卤化物的室温非枝晶镁（Mg）电沉积电解质。拉曼光谱分析表明，在等摩尔混合物中，大多数glyme分子与Mg2+阳离子和/或IL阳离子配位，这也得到了单晶x射线衍射研究的支持。甘油三酯配位的IL电解质显示出相当大的氧化还原电流（数量级为mA cm(-2)），而甘油三酯混合物由于部分浴液分解而导致电化学性能老化恶化。四配位的IL电解质使Mg具有金属光泽，并具有非常高的阳极稳定性（约+4 V vs. Mg），因为不配位的glyes减少了，可用于高压Mg离子电池。(C)作者2015。由ECS出版。
We prepared less volatile and halide-free electrolytes for room temperature non-dendritic magnesium (Mg) electrodeposition by mixing a Mg2+-amide-containing ionic liquid (IL) with equimolar glyme (Mg2++IL : glyme = 1:1). Raman spectroscopy suggested that in the equimolar mixture most glyme molecules are coordinated to Mg2+ cations and/or IL cations, which is also supported by a single crystal X-ray diffraction study. The glyme-coordinated IL electrolytes showed sizable redox currents (order of mA cm(-2)), while aging deterioration of electrochemical properties was observed for the triglyme mixture due to partial bath decomposition. The tetraglyme-coordinated IL electrolyte enabled flat electrodeposition of Mg with a metallic luster and showed with very high anodic stability (ca. +4 V vs. Mg) because of decrease in uncoordinated glymes, which can be used for high-voltage Mg ion batteries. (C) The Author( s) 2015. Published by ECS.