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

Li Wanfei | Zendy; Cheng Shuang | Zendy; Wang Jian | Zendy; Qiu Yongcai | Zendy; Zheng Zhaozhao | Zendy; Lin Hongzhen | Zendy; Nanda Sanjay | Zendy; Ma Qian | Zendy; Xu Yan | Zendy; Ye Fangmin | Zendy; Liu Meinan | Zendy; Zhou Lisha | Zendy; Zhang Yuegang | Zendy

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

Author(s) -

Li Wanfei,

Cheng Shuang,

Wang Jian,

Qiu Yongcai,

Zheng Zhaozhao,

Lin Hongzhen,

Nanda Sanjay,

Ma Qian,

Xu Yan,

Ye Fangmin,

Liu Meinan,

Zhou Lisha,

Zhang Yuegang

Publication year - 2016

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201600256

Subject(s) - magnesium , electrolyte , passivation , electrochemistry , inorganic chemistry , metal , sulfur , chemistry , materials science , ionic conductivity , electrode , metallurgy , nanotechnology , layer (electronics)

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 ][AlCl 4 ] 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.

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