Ionic liquid-polymer electrolyte for amperometric solid-state NO2 sensor

0481521 - ÚACH 2018 RIV GB eng J - Journal Article
Nádherná, Martina - Opekar, F. - Reiter, Jakub
Ionic liquid-polymer electrolyte for amperometric solid-state NO2 sensor.
Electrochimica acta. Roč. 56, č. 16 (2011), s. 5650-5655. ISSN 0013-4686. E-ISSN 1873-3859
R&D Projects: GA AV ČR(CZ) KJB200320801; GA AV ČR(CZ) KJB200320901; GA MŠMT(CZ) LC523
Institutional research plan: CEZ:AV0Z40320502
Keywords : Amperometric gas sensor * Solid-state sensor * Ionic liquid * Nitrogen dioxide * Gold minigrid
OECD category: Inorganic and nuclear chemistry
Impact factor: 3.832, year: 2011

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.% and exhibits ionic conductivity 1.6 x 10(-4) S cm(-1) at 20 degrees C. high electrochemical stability (over 4V on gold or glassy carbon) and thermal stability (over 230 degrees C). 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. The sensor response is linear in the NO2 concentration range 0.3-1.1 ppm and is reproducible and long-term stable.
Permanent Link: http://hdl.handle.net/11104/0277718