Application of Ionic Liquid PP₁₄TFSI in Electrolyte Systems for Rechargeable Mg Batteries

Authors

Jin-jie ZHU, School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China;
Fei-fei WANG, School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China;
Yong-sheng GUO, School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China;
Jun YANG, School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China;Follow
Yan-na NULI, School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China;
Jiu-lin WANG, School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China;

Corresponding Author

Jun YANG(yangj723@sjtu.edu.cn)

Abstract

A phenolated-based Mg salt was prepared. The mixture of THF and N-methyl-N-butyl-piperidinium bis(trifluoromethanesulfonyl)imide (PP14TFSI) serves as the mixed solvent instead of pure THF for rechargeable Mg batteries systems. This new type of electrolyte system not only has optimal reversibility of Mg, but also owns a wide electrochemical window (2.7 V vs. Mg) and high ionic conductivity (7.77 mS·cm^-1). More importantly, the addition of Ionic Liquid suppresses the volatility of THF and improves the safety of rechargeable Mg batteries. The result shows that the mixture of THF and piperidyl-based Ionic Liquid could be regarded as a good solvent candidate for rechargeable Mg batteries.

Graphical Abstract

Keywords

phenolate-based Mg salt, PP14TFSI, rechargeable Mg batteries, mixed solvents, electrolyte

DOI Link

https://doi.org/10.13208/j.electrochem.130726

Publication Date

2014-04-28

Online Available Date

2014-04-17

Revised Date

2013-10-17

Received Date

2013-07-16

Recommended Citation

Jin-jie ZHU, Fei-fei WANG, Yong-sheng GUO, Jun YANG, Yan-na NULI, Jiu-lin WANG. Application of Ionic Liquid PP₁₄TFSI in Electrolyte Systems for Rechargeable Mg Batteries[J]. Journal of Electrochemistry, 2014 , 20(2): 128-133.
DOI: 10.13208/j.electrochem.130726
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss2/7