scholarly journals Effect of the Different Crystallinity of Ionic Liquid Based Solid Polymer Electrolyte on the Performance of Amperometric Gas Sensor

2020 ◽  
Vol 2 (1) ◽  
pp. 37
Author(s):  
Petr Sedlák ◽  
Petr Kuberský ◽  
Adam Gajdoš ◽  
Jiří Majzner ◽  
Vlasta Sedláková ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Gas Sensor ◽  
Electrochemical Sensors ◽  
Vinylidene Fluoride ◽  
Limit Of Detection ◽  
Point Of View ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Current Response ◽  
Poly Vinylidene Fluoride

Solid polymer electrolytes (SPE) based on ionic liquid, poly-(vinylidene fluoride) and solvent N-methyl-pyrrolidone represent an effective component in electrochemical sensors. The advantage lies in their composition, which offers an opportunity to prepare SPE layers with a different porosity and microstructure. The study shows how the SPEs of different crystallinities affect the performance of an amperometric gas sensor from the point of view of current response (sensitivity), limit of detection and current fluctuations. The morphology of SPE has an impact not only on its conductivity but also on sensor sensitivity due to the morphology of the interface SPE/working electrode (WE).

Effect of Ionic Liquid Anion Type in the Performance of Solid Polymer Electrolytes Based on Poly(Vinylidene fluoride‐trifluoroethylene)

2014 ◽  
Vol 27 (2) ◽  
pp. 457-464 ◽  
Author(s):  
R. Leones ◽  
C. M. Costa ◽  
A. V. Machado ◽  
J. M. S. S. Esperança ◽  
M. M. Silva ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolytes ◽  
Vinylidene Fluoride ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Poly Vinylidene Fluoride ◽  
Anion Type

scholarly journals Current Fluctuation Measurements of Amperometric Gas Sensors Constructed with Three Different Technology Procedures

2016 ◽  
Vol 23 (4) ◽  
pp. 531-543 ◽  
Author(s):  
Petr Sedlak ◽  
Petr Kubersky ◽  
Pavel Skarvada ◽  
Ales Hamacek ◽  
Vlasta Sedlakova ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Screen Printing ◽  
Electrochemical Sensors ◽  
Flexible Substrate ◽  
Point Of View ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Current Fluctuation ◽  
Hazardous Gases ◽  
Lift Off

Abstract Electrochemical amperometric gas sensors represent a well-established and versatile type of devices with unique features: good sensitivity and stability, short response/recovery times, and low power consumption. These sensors operate at room temperature, and therefore have been applied in monitoring air pollutants and detection of toxic and hazardous gases in a number of areas. Some drawbacks of classical electrochemical sensors are overcome by the solid polymer electrolyte (SPE) based on ionic liquids. This work presents evaluation of an SPE-based amperometric sensor from the point of view of current fluctuations. The sensor is based on a novel three-electrode sensor platform with solid polymer electrolytes containing ionic liquid for detection of nitrogen dioxide − a highly toxic gas that is harmful to the environment and presenting a possible threat to human health even at low concentrations. The paper focuses on using noise measurement (electric current fluctuation measurement) for evaluation of electrochemical sensors which were constructed by different fabrication processes: (i) lift-off and drop-casting technology, (ii) screen printing technology on a ceramic substrate and (iii) screen printing on a flexible substrate.

scholarly journals An Electrochemical Amperometric Ethylene Sensor with Solid Polymer Electrolyte Based on Ionic Liquid

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 711
Author(s):  
Petr Kuberský ◽  
Jiří Navrátil ◽  
Tomáš Syrový ◽  
Petr Sedlák ◽  
Stanislav Nešpůrek ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Solid Polymer ◽  
Response Recovery ◽  
Poly Vinylidene Fluoride ◽  
Jet Printing ◽  
Aerosol Jet Printing ◽  
Printing Techniques

An electrochemical amperometric ethylene sensor with solid polymer electrolyte (SPE) and semi-planar three electrode topology involving a working, pseudoreference, and counter electrode is presented. The polymer electrolyte is based on the ionic liquid 1-butyl 3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][NTf2] immobilized in a poly(vinylidene fluoride) matrix. An innovative aerosol-jet printing technique was used to deposit the gold working electrode (WE) on the solid polymer electrolyte layer to make a unique electrochemical active SPE/WE interface. The analyte, gaseous ethylene, was detected by oxidation at 800 mV vs. the platinum pseudoreference electrode. The sensor parameters such as sensitivity, response/recovery time, repeatability, hysteresis, and limits of detection and quantification were determined and their relation to the morphology and microstructure of the SPE/WE interface examined. The use of additive printing techniques for sensor preparation demonstrates the potential of polymer electrolytes with respect to the mass production of printed electrochemical gas sensors.

scholarly journals Preparation and Characterization of Ammonium Ceric Nitrate Doped PVDF Polymer Electrolytes

2019 ◽  
Vol 8 (4S2) ◽  
pp. 903-906
Keyword(s):  
Polymer Electrolytes ◽  
Vinylidene Fluoride ◽  
Impedance Analysis ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Casting Technique ◽  
Ac Impedance Analysis ◽  
Poly Vinylidene Fluoride ◽  
Solution Casting Technique ◽  
Ammonium Ceric Nitrate

Poly [vinylidene fluoride] (PVdF): Ammonium ceric nitrate ((NH4)2Ce(NO3)6) based Proton conducting solid polymer electrolytes (SPEs) are prepared by solution casting technique. Polymer electrolytes are characterized by several techniques. The Structural property of the electrolytes are confirmed by XRD. The functional groups present in polymer electrolytes are confirmed by FTIR. The conductivity of the polymer electrolytes are calculated by using AC impedance analysis. The Maximum ionic conductivity is obtained for 2wt% of ammonium ceric nitrate doped polymer electrolyte.

scholarly journals Improved mechanical and electrochemical properties of PVDF/PEO/LiClO4 based solid polymer electrolyte by using TiO2 and MgO nanoparticles

2021 ◽  
Author(s):  
Ponam Ponam ◽  
◽  
Parshuram Singh ◽  
Keyword(s):  
Mechanical Properties ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Electrochemical Characteristics ◽  
Mgo Nanoparticles ◽  
Onset Potential ◽  
Poly Vinylidene Fluoride ◽  
Poly Ethylene

The poly (vinylidene fluoride) PVDF and poly (ethylene oxide) PEO-based solid polymer electrolytes are gaining popularity due to their good electrochemical and mechanical characteristics. In the present work the polymer electrolyte is prepared by taking 80% PVDF, 20% PEO, and 20% LiClO4 through rigorous mixing. Further, the properties of PVDF/PEO/LiClO4 based electrolyte are improved by adding TiO2 and MgO nanoparticles in different proportions. The results show that the addition of TiO2 and MgO nanoparticles has a significant effect on the electrochemical characteristics and mechanical properties of the electrolyte. The maximum current onset potential of 4.97 V is observed with a 4% concentration of TiO2 nanoparticles. Also, the mechanical properties such as ultimate stress and failure stress are increased with the addition of nanoparticles. The ionic conductivity of the electrolyte first increases with an increase in the concentration of nanoparticles but it starts decreasing after 2% concentration.

Zinc Oxide-Based Pseudocapacitors with Electrospun Poly(Vinylidene Fluoride)/Poly(Ionic Liquid) Nanofibers as Solid Polymer Electrolyte

2021 ◽  
Vol 889 ◽  
pp. 112-119
Author(s):  
Jonathan N. Patricio ◽  
Eduardo C. Atayde Jr. ◽  
Marco Laurence M. Budlayan ◽  
Susan D. Arco
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Vinylidene Fluoride ◽  
Sessile Drop ◽  
Functional Materials ◽  
Solid Polymer ◽  
Scanning Electron Micrographs ◽  
Area Functional ◽  
Poly Vinylidene Fluoride ◽  
Poly Ionic Liquid

Due to the interesting properties of polymerized ionic liquids (PILs), studies are carried out to evaluate its performance when in composite with other synthetic polymers. Research on blend films prepared through solution casting are typically done to investigate their properties, however, electrospun fibers are of particular interest especially on technologies requiring mechanically robust and high surface area functional materials. In this work, poly (vinylidene fluoride)/poly (ionic liquid) (PVdF/PIL) nanofibers were produced through electrospinning. The PIL, poly (1-hexyl-3-vinyl imidazolium bromide), was synthesized through sonochemical solventless reaction followed by free radical polymerization. The structures of the synthesized IL and PIL were confirmed using FT-IR, 1H-NMR and 13C-NMR spectroscopy. Pseudocapacitor prototypes consisting of electrodeposited ZnO-based electrodes and the electrospun PVdF/PIL nanofibers as the polymer electrolyte were then fabricated at varied PIL concentrations. Contact angle measurements using sessile drop method revealed the decreasing wettability of the fibers attributed to the inherent hydrophobic nature of both the PVdF and PIL. Scanning electron micrographs also showed that increasing fiber diameters were obtained as the PIL concentration increases. In addition, cyclic voltammetry results showed that the calculated areal capacitance also increases with increasing PIL concentration. The development of pseudocapacitor assemblies utilizing ZnO-based electrodes and electrospun polymer electrolyte-separator membranes presents a better promise for the next-generation energy storage devices.

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