Publication detail

Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor

SEDLÁK, P. KASPAR, P. SOBOLA, D. GAJDOŠ, A. MAJZNER, J. SEDLÁKOVÁ, V. KUBERSKÝ, P.

Original Title

Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor

Type

journal article in Web of Science

Language

English

Original Abstract

Solid polymer electrolytes show their potential to partially replace conventional electrolytes in electrochemical devices. The solvent evaporation rate represents one of many options for modifying the electrode-electrolyte interface by affecting the structural and electrical properties of polymer electrolytes used in batteries. This paper evaluates the effect of solvent evaporation during the preparation of solid polymer electrolytes on the overall performance of an amperometric gas sensor. A mixture of the polymer host, solvent and an ionic liquid was thermally treated under different evaporation rates to prepare four polymer electrolytes. A carbon nanotube-based working electrode deposited by spray-coating the polymer electrolyte layer allowed the preparation of the electrode-electrolyte interface with different morphologies, which were then investigated using scanning electron microscopy and Raman spectroscopy. All prepared sensors were exposed to nitrogen dioxide concentration of 0-10 ppm, and the current responses and their fluctuations were analyzed. Electrochemical impedance spectroscopy was used to describe the sensor with an equivalent electric circuit. Experimental results showed that a higher solvent evaporation rate leads to lower sensor sensitivity, affects associated parameters (such as the detection/quantification limit) and increases the limit of the maximum current flowing through the sensor, while the other properties (hysteresis, repeatability, response time, recovery time) change insignificantly.

Keywords

solid polymer electrolyte; gas sensor; noise spectroscopy; ionic liquid

Authors

SEDLÁK, P.; KASPAR, P.; SOBOLA, D.; GAJDOŠ, A.; MAJZNER, J.; SEDLÁKOVÁ, V.; KUBERSKÝ, P.

Released

6. 11. 2022

Publisher

MDPI

Location

BASEL

ISBN

2073-4360

Periodical

Polymers

Year of study

14

Number

21

State

Swiss Confederation

Pages from

1

Pages to

17

Pages count

17

URL

https://www.mdpi.com/2073-4360/14/21/4758/htm

Full text in the Digital Library

http://hdl.handle.net/11012/208578

BibTex

@article{BUT179879,
  author="Petr {Sedlák} and Pavel {Kaspar} and Dinara {Sobola} and Adam {Gajdoš} and Jiří {Majzner} and Vlasta {Sedláková} and Petr {Kuberský}",
  title="Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor",
  journal="Polymers",
  year="2022",
  volume="14",
  number="21",
  pages="17",
  doi="10.3390/polym14214758",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/14/21/4758/htm"
}