Synthesis, Crystal Structure, and Electrochemical Properties of a Simple Magnesium Electrolyte for Magnesium/Sulfur Batteries.
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.
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Wanfei
W
Li
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Shuang
S
Cheng
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Jian
J
Wang
Department of Physics, Tsinghua University, Beijing, 100084, China.
Yongcai
Y
Qiu
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Zhaozhao
Z
Zheng
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Hongzhen
H
Lin
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Sanjay
S
Nanda
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Qian
Q
Ma
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Yan
Y
Xu
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Fangmin
F
Ye
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Meinan
M
Liu
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China.
Lisha
L
Zhou
i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P.R. China. ygzhang2012@sinano.ac.cn.|Department of Physics, Tsinghua University, Beijing, 100084, China. ygzhang2012@sinano.ac.cn.
Yuegang
0000-0003-0344-8399
Y
Zhang
electrochemistry; electrolytes; magnesium; rechargeable batteries; sulfur