PP14TFSI离子液体在可充镁电池电解液的应用

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（PP14 TFsI）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（2．7V vS．Mg），离子电导率高（7．77mS·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．...

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Published in电化学 Vol. 20; no. 2; pp. 128 - 133
Main Author 朱金杰 王菲菲 郭永胜 杨军 努丽燕娜 王久林
Format Journal Article
LanguageChinese
Published 01.04.2014
Subjects
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
苯酚基镁盐
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ISSN1006-3471
2993-074X
DOI10.13208/j.electrochem.130726

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Summary: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（PP14 TFsI）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（2．7V vS．Mg），离子电导率高（7．77mS·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．
Bibliography:35-1172/06
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 ofrechargeable 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.
phenolate-based Mg salt; PP14TFSI; rechargeable Mg batteries; mixed solvents; electrolyte
ZHU Jin-jie, WANG Fei-fei, GUO Yong-sheng, YANG Jun, NULl Yan-na, WANG Jiu-lin （School of Chemistry and Chemical Engineering, Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, China）
ISSN:1006-3471
2993-074X
DOI:10.13208/j.electrochem.130726