Synthesis, Crystal Structure, and Electrochemical Properties of a Simple Magnesium Electrolyte for Magnesium/Sulfur Batteries

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• 作者：Dr. Wanfei Li ; Shuang Cheng ; Jian Wang ; Dr. Yongcai Qiu ; Zhaozhao Zheng ; Dr. Hongzhen Lin ; Sanjay Nanda ; Qian Ma ; Yan Xu ; Dr. Fangmin Ye ; Dr. Meinan Liu ; Lisha Zhou and Prof. Yuegang Zhang
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：May 23, 2016
• 年：2016
• 卷：55
• 期：22
• 页码：6406-6410
• 全文大小：2153K
• ISSN：1521-3773

文摘

Most simple magnesium salts tend to passivate the Mg metal surface too quickly to function as electrolytes for Mg batteries. In the present work, an electroactive salt [Mg(THF)₆][AlCl₄]₂ was synthesized and structurally characterized. The Mg electrolyte based on this simple mononuclear salt showed a high Mg cycling efficiency, good anodic stability (2.5 V vs. Mg), and high ionic conductivity (8.5 mS cm⁻¹). Magnesium/sulfur cells employing the as-prepared electrolyte exhibited good cycling performance over 20 cycles in the range of 0.3–2.6 V, thus indicating an electrochemically reversible conversion of S to MgS without severe passivation of the Mg metal electrode surface.