Electrical Conduction and Dielectric Relaxation Phenomena of PVA Based Polymer Electrolyte Films

Bhargav, P. Balaji; Sarada, B.A.; Sharma, A. K.; Rao, Vijayalakshmi

doi:10.1080/10601320903458564

Cited by 57 publications

(35 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen that for pure PVA, the value of ε is ∼1.74 at frequency 75 kHz, which gradually decreases to ∼1.02 at 5 MHz [16,24,25]. Similar behaviour is also observed in a number of other polymers like PVP, PMMA, etc., verifying the fact that for polar materials, the value of ε is high for low frequency range and begins to drop as frequency increases [26][27][28]. This can be appropriately explained on the basis of the electrode effect and interfacial effect of the sample, i.e., charge carriers being blocked at the electrodes.…”

Section: Conductivitymentioning

confidence: 96%

Electrical conductivity and dielectric spectroscopic studies of PVA–Ag nanocomposite films

Mahendia

Tomar

Kumar

2010

Journal of Alloys and Compounds

193

View full text Add to dashboard Cite

Section: Conductivitymentioning

confidence: 96%

Electrical conductivity and dielectric spectroscopic studies of PVA–Ag nanocomposite films

Mahendia

Tomar

Kumar

2010

Journal of Alloys and Compounds

193

View full text Add to dashboard Cite

“…Similar behavior is reported for several others metal-doped polymer films (PVP, PMMA, etc.) suggesting that for polar materials, the value of εʹ is high for low frequency range and decreases as frequency increases [104][105][106]. The reason for this behavior is identified in the electrode and interfacial effects of the sample: at low frequency, electrical dipoles in polymeric samples tend to orient themselves as the applied external electrical field; in the high frequency regime, on the basis of polarization effects, the electrical dipoles in polymeric samples have a very small tendency to orient as the external applied electric field and then for field increase at high frequencies, the dielectric constant decreases [107].…”

Section: Metal Nanoparticles Embedded In Polymer Filmmentioning

confidence: 99%

“…Concerning the behavior εʹʹ with frequency (Figure 25b), we can observe its decrease with increasing frequency f. In the low frequency region, the higher values of ε'' are attributable to the mobile charges within the polymer matrix. On the contrary, in the high frequency region, the periodic field inversion is so fast to inhibit the excess ion diffusion in the direction of the electric field [104,105]. So, the polarization effect decreases (due to charge accumulation) and, correspondently, ε″ decreases.…”

Section: Metal Nanoparticles Embedded In Polymer Filmmentioning

confidence: 99%

Metal-Polymer Nanocomposites: (Co-)Evaporation/(Co)Sputtering Approaches and Electrical Properties

Torrisi

Ruffino

2015

Coatings

View full text Add to dashboard Cite

Abstract:In this review, we discuss the basic concepts related to (co-)evaporation and (co)sputtering based fabrication methods and the electrical properties of polymer-metal nanocomposite films. Within the organic-inorganic hybrid nanocomposites research framework, the field related to metal-polymer nanocomposites is attracting much interest. In fact, it is opening pathways for engineering flexible composites that exhibit advantageous electrical, optical, or mechanical properties. The metal-polymer nanocomposites research field is, now, a wide, complex, and important part of the nanotechnology revolution. So, with this review we aim, starting from the discussion of specific cases, to focus our attention on the basic microscopic mechanisms and processes and the general concepts suitable for the interpretation of material properties and structure-property correlations. The review aims, in addition, to provide a comprehensive schematization of the main technological applications currently in development worldwide.

show abstract

“…New observations on this topic are interesting to be discussed (Aji et al, 2012;Bhargav et al, 2010;2007a;2007b;Mohamad et al, 2003). When ion concentration in the polymer electrolytes is increased, both the fraction of amorphous phase and the charge carriers increase simultaneously.…”

Section: Introductionmentioning

confidence: 99%

A General Formula for Ion Concentration-Dependent Electrical Conductivities in Polymer Electrolytes

Aji¹

2012

American Journal of Applied Sciences

View full text Add to dashboard Cite

Problem statement:The aim of this study is to develop a model for describing the effect of ion concentration on the electrical conductivity of polymer electrolytes by considering two mechanisms simultaneously: Enhancements of ion concentration and amorphous phase. Approach: The problems based on new observations in polymer electrolyte when ion concentration in the polymer electrolytes was increased, both the fraction of amorphous phase and the charge carriers increase simultaneously. The model was based on the assumption when ions were inserted into the polymer host, there was an optimum distance between ions at which the ions move easily throughout the polymer. The average distance between ions in the polymer depends on the ion concentration. And we also considered the effect of ion concentration on the amorphous phase in the polymer. Results: We inspected the validity of the model by comparing the model predictions with various experimental data. The new analytical expressions for the electrical conductivity dependent of ion concentration was developed by considering two mechanisms simultaneously in polymer electrolytes, i.e., enhancement of the carries concentration and amorphous phase fraction. Interestingly, most of fitting parameters were not arbitrarily selected, but were derived from the appropriate experimental data. Conclusion: The model can be used to explain the conductivity behavior of other polymer electrolyte systems by selecting appropriately less number of parameters. This model result is fully supported by available experimental data.

show abstract

Electrical Conduction and Dielectric Relaxation Phenomena of PVA Based Polymer Electrolyte Films

Cited by 57 publications

References 23 publications

Electrical conductivity and dielectric spectroscopic studies of PVA–Ag nanocomposite films

Electrical conductivity and dielectric spectroscopic studies of PVA–Ag nanocomposite films

Metal-Polymer Nanocomposites: (Co-)Evaporation/(Co)Sputtering Approaches and Electrical Properties

A General Formula for Ion Concentration-Dependent Electrical Conductivities in Polymer Electrolytes

Contact Info

Product

Resources

About