Pressure-Temperature Phase Diagram of Ionic Liquid Dielectric DEME-TFSI

被引：7

作者：

McCann, Duncan M. ^{[1
,4
]}

Misek, Martin ^{[2
,4
]}

Kamenev, Konstantin V. ^{[3
,4
]}

Huxley, Andrew D. ^{[1
,4
]}

机构：

[1] Univ Edinburgh, Sch Phys & Astron, Edinburgh, Midlothian, Scotland

[2] Acad Sci Czech Republic, Inst Phys Vvi, Prague, Czech Republic

[3] Univ Edinburgh, Sch Engn, Edinburgh, Midlothian, Scotland

[4] Univ Edinburgh, Ctr Sci Extreme Condit, Edinburgh, Midlothian, Scotland

来源：

20TH INTERNATIONAL CONFERENCE ON MAGNETISM, ICM 2015 | 2015年 / 75卷

关键词：

DEME-TFSI; ionic liquid; pressure; phase; glass transition; SUPERCONDUCTIVITY;

D O I：

10.1016/j.phpro.2015.12.031

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ionic liquids have proven highly effective as dielectrics in Electric Double Layer (EDL) devices for electrostatic doping in a range of materials. DEME-TFSI in particular is a commonly used dielectric due to its high ionic conductivity and low glass transition temperature of 182 K. Application of pressure provides a dual tuning parameter in tandem with the electric field yet progress is hampered by the lack of an accurate pressure-temperature phase diagram for DEME-TFSI. We present results on expansivity and leakage current measurements of the ionic liquid dielectric DEME-TFSI to provide a phase diagram mapping the glass transition temperature up to 0.6 GPa. This should allow the effective operation of EDL devices using DEME-TFSI under pressure.

引用

页码：252 / 258

页数：7

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