Publication detail

An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity

KUBERSKÝ, P. ALTŠMÍD, J. HAMÁČEK, A. NEŠPŮREK, S. ZMEŠKAL, O.

Original Title

An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity

Type

journal article in Web of Science

Language

English

Original Abstract

A systematic study was carried out to investigate the effect of ionic liquid in solid polymer electrolyte (SPE) and its layer morphology on the characteristics of an electrochemical amperometric nitrogen dioxide sensor. Five different ionic liquids were immobilized into a solid polymer electrolyte and key sensor parameters (sensitivity, response/recovery times, hysteresis and limit of detection) were characterized. The study revealed that the sensor based on 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][N(Tf)2]) showed the best sensitivity, fast response/recovery times, and low sensor response hysteresis. The working electrode, deposited from water-based carbon nanotube ink, was prepared by aerosol-jet printing technology. It was observed that the thermal treatment and crystallinity of poly(vinylidene fluoride) (PVDF) in the solid polymer electrolyte influenced the sensitivity. Picture analysis of the morphology of the SPE layer based on [EMIM][N(Tf)2] ionic liquid treated under different conditions suggests that the sensor sensitivity strongly depends on the fractal dimension of PVDF spherical objects in SPE. Their deformation, e.g., due to crowding, leads to a decrease in sensor sensitivity.

Keywords

ionic liquid; amperometric NO2 sensor; carbon nanotube; aerosol-jet printing

Authors

KUBERSKÝ, P.; ALTŠMÍD, J.; HAMÁČEK, A.; NEŠPŮREK, S.; ZMEŠKAL, O.

RIV year

2015

Released

11. 11. 2015

Publisher

MDPI

Location

Basel, Switzerland

ISBN

1424-8220

Periodical

SENSORS

Year of study

15

Number

11

State

Swiss Confederation

Pages from

28421

Pages to

28434

Pages count

14

URL

http://www.mdpi.com/1424-8220/15/11/28421

Full text in the Digital Library

http://hdl.handle.net/11012/137236

BibTex

@article{BUT118144,
  author="Petr {Kuberský} and Jakub {Altšmíd} and Aleš {Hamáček} and Stanislav {Nešpůrek} and Oldřich {Zmeškal}",
  title="An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity",
  journal="SENSORS",
  year="2015",
  volume="15",
  number="11",
  pages="28421--28434",
  doi="10.3390/s151128421",
  issn="1424-8220",
  url="http://www.mdpi.com/1424-8220/15/11/28421"
}