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Pressure-temperature phase diagram of ionic liquid dielectric DEME-TFSI
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SYSNO ASEP 0485778 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Pressure-temperature phase diagram of ionic liquid dielectric DEME-TFSI Author(s) McCann, D.M. (GB)
Míšek, Martin (FZU-D) RID, ORCID
Kamenev, K. V. (GB)
Huxley, A.D. (GB)Number of authors 4 Source Title Physics Procedia - ICM 2015, Vol.75. - Amsterdam : Elsevier, 2015 / Labarta A. - ISSN 1875-3892 Pages s. 252-258 Number of pages 7 s. Publication form Online - E Action International Conference on Magnetism /20./ Event date 05.07.2015 - 10.07.2015 VEvent location Barcelona Country ES - Spain Event type WRD Language eng - English Country NL - Netherlands Keywords DEME-TFSI ; ionic liquid ; pressure ; phase ; glass transition Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Institutional support FZU-D - RVO:68378271 UT WOS 000381129300035 EID SCOPUS 84974726289 DOI 10.1016/j.phpro.2015.12.031 Annotation 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.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
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