Electrical properties of poly(vinyl alcohol) (PVA) based on LiFePO4 complex polymer electrolyte films

Mohan, Varishetty Madhu; Qiu, Weiliang; Shen, Jie; Chen, Wen

doi:10.1007/s10965-009-9300-0

Cited by 49 publications

(27 citation statements)

References 32 publications

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“…The frequency dependent electrical properties of polymer composites have been studied by the previous authors [5,[11][12][13][14]. The AC electrical studies of the polymers reveal some structural details and add valuable complementary information relevant to electrical applications of polymer materials.…”

Section: Introductionmentioning

confidence: 99%

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Senthil

Badapanda²,

Kumar

et al. 2012

J Polym Res

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Frequency dependent dielectric, modulus, impedance and AC conductivity study of Poly Vinyl Alcohol with 25 vol.% of Yttrium modified Barium Zirconium Titanate ceramic have been investigated. The single phase Yttrium modified Barium Zirconium Titanate ceramics have been synthesized by conventional solid state route. The relaxation mechanism of dielectric and modulus study is due to the segmental motion of polymer chain along with the dipole orientation of ceramic in the polymer composite. The Nyquist plot of impedance shows two semicircles, which represents the bulk and interfacial effect of polymer composites. The activation energy decreases with incorporation of higher Yttrium modified Barium Zirconium Titanate ceramics in the polymer matrix due to the even distribution of ceramic in the polymer composite. The different activation energy obtained from conduction and relaxation of the composite indicates that various mechanisms are involved in the conduction and relaxation process.

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Section: Introductionmentioning

confidence: 99%

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Senthil

Badapanda²,

Kumar

et al. 2012

J Polym Res

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show abstract

“…This clearly indicates the suppression of crystallites and there by increase in the amorphous content in the polymer. This leads to favoring in transport and thus to enhance the ionic conductivity of the electrolyte 22 .…”

mentioning

confidence: 99%

Structural, Optical and Thermal Characterizations of PVA/MAA:EA Polyblend Films

et al. 2018

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Films of polyvinyl alcohol (PVA), Methacrylic Acid -Ethyl Acrylate (MAA:EA) copolymer and their blends PVA:MAA:EA of composition 80:20, 60:40, 50:50, 40:60, 20:80 (wt %) were prepared by using the solution cast technique. The prepared films were investigated by structural, optical and thermal studies. X-ray diffraction (XRD) scans revealed the semicrystalline nature of the blends for lower concentrations of PVA up to 60 wt % and the amorphous nature for higher ones. Fourier transform infra-red spectroscopy (FTIR) of blend samples indicates that there is a compatibility between PVA and MAA:EA copolymers through the formation of hydrogen-bonding between their polar groups. SEM image of polymer blend suggested the presence structural reorganization of polymer chains. UV-Visible spectral analysis revealed that the intensity of the shoulder around 271 nm decreases with increasing MAA:EA content. In DSC analysis, a single glass transition temperature for each blend was observed, which supports the existence of compatibility of such systems. From the observed results, 50:50 (wt %) PVA/MAA:EA is found to be the optimum blending ratio.

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“…In Figure 5, the loss factor increase with frequency and with temperature too, arriving a maxim value for later decrease, since the high value of loss factor is generated by the free charge accumulations into interface between the electrodes and electrolyte [19], while to high frequencies, the periodic reversal of the electric field occurs so fast that there is no excess ion diffusion in the direction of the field. The polar ionization due to the charge accumulation decreases, leading to a decrease in the value of the dielectric loss.…”

Section: Electric Analysismentioning

confidence: 97%

Electrical Properties and Phase Behavior of Proton Conducting Nanocomposites Based on the Polymer System (1 － x)[PVOH + H3PO2 + H2O]·x(Nb2O5)

Mazuera¹,

Vargas²

2014

AJAC

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Electrical properties of poly(vinyl alcohol) (PVA) based on LiFePO4 complex polymer electrolyte films

Cited by 49 publications

References 32 publications

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Structural, Optical and Thermal Characterizations of PVA/MAA:EA Polyblend Films

Electrical Properties and Phase Behavior of Proton Conducting Nanocomposites Based on the Polymer System (1 － x)[PVOH + H<sub>3</sub>PO<sub>2</sub> + H<sub>2</sub>O]·x(Nb<sub>2</sub>O<sub>5</sub>)

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Electrical properties of poly(vinyl alcohol) (PVA) based on LiFePO4 complex polymer electrolyte films

Cited by 49 publications

References 32 publications

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Structural, Optical and Thermal Characterizations of PVA/MAA:EA Polyblend Films

Electrical Properties and Phase Behavior of Proton Conducting Nanocomposites Based on the Polymer System (1 － x)[PVOH + H&lt;sub&gt;3&lt;/sub&gt;PO&lt;sub&gt;2&lt;/sub&gt; + H&lt;sub&gt;2&lt;/sub&gt;O]&#183;x(Nb&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt;)

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Electrical Properties and Phase Behavior of Proton Conducting Nanocomposites Based on the Polymer System (1 － x)[PVOH + H<sub>3</sub>PO<sub>2</sub> + H<sub>2</sub>O]·x(Nb<sub>2</sub>O<sub>5</sub>)