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Amperometric Solid-State NO2 Sensor with Ionic Liquid-Polymer Electrolyte
Nádherná, M. ; Opekar, F. ; Reiter, Jakub
A new ionic liquid-polymer electrolyte was successfully tested in the planar amperometric solid-state sensor sensitive towards nitrogen dioxide. The electrolyte consists of 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF6) and poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) in the ratio 57:43 mol. %. The analyte, gaseous nitrogen dioxide in air, was determined using the electrochemical reduction at900 mV vs. Pt/air on gold minigrid indicating electrode with Pt/air as a reference electrode. Dependency of sensor sensitivity on the indicating electrode area and relative humidity was determined. The sensor response is linear in the NO2 concentration range 0.3 1.1 ppm and is reproducible and long-term stable.
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Solute-Solvent Interaction in Systems of Ionic Liquids with Molecular Solvents.
Čanji, Maja
The goal of this study was to understand the interactions of ions and their interaction with molecular solvents such as water, methanol, acetone, etc. Saccharinate is a natural nontoxic anion, contributing to a relatively high viscosity of the ionic liquid. Application of highly viscous ILs can be difficult and can be overcome by mixing with some molecular solvents.
Plný tet: SKMBT_22316070712110 -  PDF
Plný text: content.csg - PDF
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Study of Impurities and their Effect on the Physico-Chemical Properties of Ionic Liquids.
Rotrekl, Jan
The primary aim of the present study is to characterize thermophysically three novel ionic liquids 1-(2-(2ethoxyethoxy)ethyl)-3-alkylimidazolium with the bistriflate anion, where the alkyl stands for pentyl, isopentyl or neopentyl. For this purpose thermodynamic and transport properties such as density, heat capacity, electrical conductivity, and viscosity are studied.
Plný tet: SKMBT_C22016053109240 - PDF
Plný text: content.csg - PDF
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Elektrické vlastnosti modifikovaných iontových kapalin
Kulhavý, Miloslav ; Libich, Jiří (oponent) ; Máca, Josef (vedoucí práce)
Tato práce se zabývá iontovými kapalinami a využitím těchto kapalin jako elektrolytu v lithium-iontových akumulátorech. V práci jsou popsány základní vlastnosti sekundárních elektrochemických článků a vlastnosti iontových kapalin. V práci je také popsán postup modifikace a měření iontových kapalin. V práci jsou také uvedeny výsledky měření vodivosti a potenciálového okna modifikovaných iontových kapalin.
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