欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2014, Vol. 20 ›› Issue (2): 128-133.  doi: 10.13208/j.electrochem.130726

• 研究论文 • 上一篇    下一篇

PP14TFSI离子液体在可充镁电池电解液的应用

朱金杰,王菲菲,郭永胜,杨军*,努丽燕娜,王久林   

  1. 上海交通大学化学化工学院,平野材料创新研究所,上海 200240
  • 收稿日期:2013-07-16 修回日期:2013-10-17 出版日期:2014-04-28 发布日期:2014-04-17
  • 通讯作者: 杨军 E-mail:yangj723@sjtu.edu.cn

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

ZHU Jin-jie, WANG Fei-fei, GUO Yong-sheng, YANG Jun*, NULI Yan-na, WANG Jiu-lin   

  1. School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2013-07-16 Revised:2013-10-17 Published:2014-04-28 Online:2014-04-17
  • Contact: YANG Jun E-mail:yangj723@sjtu.edu.cn

摘要: 制备了可充镁电池电解质苯酚基镁盐,以四氢呋喃(THF)与N-甲基-N-丁基-哌啶-双三氟甲基磺酰胺(PP14TFSI)离子液体混合物代替四氢呋喃作为该电解质的溶剂. 当THF与PP14TFSI体积配比为1:1时,该苯酚基镁盐电解液镁可逆溶出性能最佳,电化学窗口宽(2.7 V vs. Mg),离子电导率高(7.77 mS·cm-1). 此外,热重测试表明离子液体的加入大大降低了THF溶剂的挥发性,提高了可充镁电池的安全性能. 四氢呋喃 + N-甲基-N-丁基-哌啶-双三氟甲基磺酰胺混合溶剂有望作为可充镁电池电解液的首选溶剂.

关键词: 苯酚基镁盐, N-甲基-N-丁基-哌啶-双三氟甲基磺酰胺, 可充镁电池, 混合溶剂, 电解液

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.

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

中图分类号: