Symmetric electric double‐layer capacitor containing imidazolium ionic liquid‐based solid polymer electrolyte: Effect of TiO 2 and ZnO nanoparticles on electrochemical behavior

2019 ◽  
Vol 137 (22) ◽  
pp. 48757 ◽  
Author(s):  
Sayan Das ◽  
Aswini Ghosh
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Zno Nanoparticles ◽  
Electrochemical Behavior ◽  
Electric Double Layer ◽  
Solid Polymer Electrolyte ◽  
Solid Polymer ◽  
Electric Double Layer Capacitor ◽  
Imidazolium Ionic Liquid ◽  
Double Layer Capacitor

scholarly journals The effect of thermal treatment on ac/dc conductivity and current fluctuations of PVDF/NMP/[EMIM][TFSI] solid polymer electrolyte

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Petr Sedlak ◽  
Adam Gajdos ◽  
Robert Macku ◽  
Jiri Majzner ◽  
Vladimir Holcman ◽  
...  
Keyword(s):  
Experimental Study ◽  
Ionic Liquid ◽  
Thermal Treatment ◽  
Polymer Electrolyte ◽  
Polymer Matrix ◽  
Shot Noise ◽  
Solid Polymer Electrolyte ◽  
Evaporation Rate ◽  
Solid Polymer ◽  
Current Fluctuations

AbstractThe experimental study deals with the investigation of the effect of diverse crystallinity of imidazolium ionic-liquid-based SPE on conductivity and current fluctuations. The experimental study was carried out on samples consisting of [EMIM][TFSI] as ionic liquid, PVDF as a polymer matrix and NMP as a solvent. After the deposition, the particular sample was kept at an appropriate temperature for a specific time in order to achieve different crystalline forms of the polymer in the solvent, since the solvent evaporation rate controls crystallization. The ac/dc conductivities of SPEs were investigated across a range of temperatures using broadband dielectric spectroscopy in terms of electrical conductivity. In SPE samples of the higher solvent evaporation rate, the real parts of conductivity spectra exhibit a sharper transition during sample cooling and an increase of overall conductivity, which is implied by a growing fraction of the amorphous phase in the polymer matrix in which the ionic liquid is immobilized. The conductivity master curves illustrate that the changing of SPEs morphology is reflected in the low frequency regions governed by the electrode polarization effect. The dc conductivity of SPEs exhibits Vogel–Fulcher–Tammann temperature dependence and increases with the intensity of thermal treatment. Spectral densities of current fluctuations showed that flicker noise, thermal noise and shot noise seems to be major noise sources in all samples. The increase of electrolyte conductivity causes a decrease in bulk resistance and partially a decrease in charge transfer resistance, while also resulting in an increase in shot noise. However, the change of electrode material results in a more significant change of spectral density of current fluctuations than the modification of the preparation condition of the solid polymer electrolyte. Thus, the contact noise is considered to contribute to overall current fluctuations across the samples.

Preparation of Solid Polymer Actuator Based on PEDOT/NBR/Ionic Liquid

2005 ◽  
Vol 297-300 ◽  
pp. 641-645 ◽  
Author(s):  
Mi Suk Cho ◽  
Jae Do Nam ◽  
Hyouk Ryeol Choi ◽  
Ja Choon Koo ◽  
Young Kwan Lee
Keyword(s):  
Ionic Liquid ◽  
Polymer Electrolyte ◽  
Conducting Polymer ◽  
Solid Polymer Electrolyte ◽  
Base Material ◽  
Chemical Oxidation ◽  
Solid Polymer ◽  
Molding Process ◽  
Beam Radiation ◽  
Polymer Actuator

The fabrication of dry type conducting polymer actuator was presented. In the preparation of actuator system, nitrile rubber (NBR) was used as a base material of the solid polymer electrolyte. Thin films of NBR (150-200μ m) were prepared by compression molding process. The conducting polymer, poly (3,4- ethylenedioxythiophene) (PEDOT) was synthesized on the surface of NBR by chemical oxidation polymerization technique, and the room temperature ionic liquid, 1-ethyl-3- methylimidazolium bis (trifluoromethyl sulfonyl) imide (EMITFSI) was introduced into the composite film. The ionic conductivity of new type solid polymer electrolyte as a function of the immersion time and the cyclic voltammetry responses and the redox switching dynamics of PEDOT in NBR/ionic liquid solid polymer electrolyte were studied. The displacement of actuator was measured by laser beam radiation.

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