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Pressure-temperature phase diagram of ionic liquid dielectric DEME-TFSI
- 1.0485778 - FZÚ 2018 RIV NL eng C - Conference Paper (international conference)
McCann, D.M. - Míšek, Martin - Kamenev, K. V. - Huxley, A.D.
Pressure-temperature phase diagram of ionic liquid dielectric DEME-TFSI.
Physics Procedia - ICM 2015. Vol.75. Amsterdam: Elsevier, 2015 - (Labarta, A.), s. 252-258. ISSN 1875-3892.
[International Conference on Magnetism /20./. Barcelona (ES), 05.07.2015-10.07.2015]
Institutional support: RVO:68378271
Keywords : DEME-TFSI * ionic liquid * pressure * phase * glass transition
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
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.
Permanent Link: http://hdl.handle.net/11104/0280721
Number of the records: 1