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Electrochemical Preparation of MoS2 Intercalated Compound with Micron Size for Magnesium-Ion Storage
Author NameAffiliationE-mail
LI Jin-Jin School of Materials Science and Engineering, Tongji University, Shanghai 201804, China  
LIU Cong-Cong School of Materials Science and Engineering, Tongji University, Shanghai 201804, China  
GUO Min School of Materials Science and Engineering, Tongji University, Shanghai 201804, China  
LI Shi-Ying School of Materials Science and Engineering, Tongji University, Shanghai 201804, China  
WU Zi-Chen School of Materials Science and Engineering, Tongji University, Shanghai 201804, China  
ZHAO Xiao-Li School of Materials Science and Engineering, Tongji University, Shanghai 201804, China zxl36@tongji.edu.cn 
YANG Xiao-Wei School of Materials Science and Engineering, Tongji University, Shanghai 201804, China  
Abstract: The micro-sized MoS2 intercalated compound with the intercalant of 1-butyl-3-methyl-imidazolium cation (BMIM+) was prepared by a simple electrochemical method and used as cathode material of magnesium ion batteries. The MoS2 intercalated compound (denoted as MoS2-BMIM+) has an expanded interlayer spacing of 0.98 nm, which effectively reduced the insertion/extraction barrier of Mg2+ and provided abundant active sites for Mg2+ intercalation. Therefore, the MoS2-BMIM+ deliverd a significantly improved charging capacity (101.93 mAh·g-1 at 20 mA· g-1, about 4 times as much as bulk MoS2) and a good rate performance. We further show that this method can also be applied for the intercalation of 1-butyl-1-methylpyrrolidinium cation (Pyr14+), which showed an interlayer spacing of 1.04 nm.
Keywords: magnesium ion battery  cathode material  molybdenum disulfide  electrochemical intercalation  interlayer spacing
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LI Jin-Jin,LIU Cong-Cong,GUO Min,LI Shi-Ying,WU Zi-Chen,ZHAO Xiao-Li,YANG Xiao-Wei.Electrochemical Preparation of MoS2 Intercalated Compound with Micron Size for Magnesium-Ion Storage[J].Chinese Journal of Inorganic Chemistry,2020,36(8):1543-1549.
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Chinese Journal of Inorganic Chemistry