客户用EMITFSI完成论文A novel ionic liquid polymer electrolyte for quasisolid state lithium air batteries

客户用EMITFSI（1-乙基-3-甲基咪唑双三氟甲磺酰亚胺盐，CAS号：174899-82-2）完成论文A novel ionic liquid polymer electrolyte for quasisolid state lithium air batteries

论文信息

标题：A novel ionic liquid polymer electrolyte for quasisolid state lithium air batteries

作者：Junjie Bai, Huimin Lu, Yuan Cao, Xudong Li and Junren Wang

期刊：RSC Adv., 2017, 7, 30603

摘要：Novel ionic liquid polymer electrolytes based on polymer poly(vinylidene fluoride-co-hexafluoropropylene)
(PVdF-HFP), lithium bis(tri-fluoromethanesulfonyl)imide (LiTFSI) with different 1-ethyl-3-methylimidazolium
bis(trifluoromethanesulfonyl)imide (EMITFSI) weight ratios have been synthesized and
applied to quasi-solid state Li–air batteries. The morphology, electrochemical properties of prepared
electrolytes, the discharge–charge capacity and cycling performance of the quasi-solid state Li–air
batteries have been characterized and are discussed. Electrochemical properties of polymer electrolyte
with incorporation of EMITFSI improved the electrochemical stability window (4.9 V) with higher ionic
conductivity (
4.30  103 S cm1), but decreased the cationic transference number. The improvements
are attributed to the reducing crystallinity of polymer matrix and formation of many homogeneous,
large-size across-linked pores (60% EMITFSI), which could facilitate the transmission of Li ions. While for
the quasi-solid state Li–air batteries, the ionic liquid polymer electrolyte shows good compatibility and
safety with an Li anode and an air breathing cathode, significantly improved galvanostatic discharge–
charge capacity and cyclic stability (without capacity fading until 20 cycles) in the capacity-controlled
mode, which demonstrates that the novel ionic liquid polymer electrolyte is a potential choice for the
quasi-solid state Li–air batteries for future practical applications.

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RSC Adv.,2017,7,30603.pdf