Dilectric and thermal properties of PEO doped with cadimium chloride salt

Al-Hawarin, Jibril; Ayesh, Ayman S; Abdel‐Rahem, Rami A.

doi:10.1007/s10118-012-1106-6

Cited by 8 publications

(8 citation statements)

References 28 publications

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Section: Resultssupporting

confidence: 80%

“…The corresponding normalized decay curves of the currents are shown in Figure S4, Supporting Information. By increasing voltage, the power factor α for all these samples gradually decreases ( Figure S4d-h, Supporting Information)) in accordance with the Kohlrausch behavior in the short time range, [46,[75][76][77] as the interval of 1 min considered here. The relaxation of the charges may be indicative of the presence of SCP/CT in PEO that certainly affects the temporal behavior of the current flow.…”

Section: Resultssupporting

confidence: 79%

“…By that, the value of the power factor α is decreased with increasing voltage (Figure b). This is expected for monotonically decreasing Kohlrausch current in PEO due to the motion of the internal ions . The behavior of the current in PEO at 10 V approaches the mono‐exponential decay and starts to deviate from the power law.…”

Section: Resultsmentioning

confidence: 82%

“…This is expected for monotonically decreasing Kohlrausch current in PEO due to the motion of the internal ions. [46,[75][76][77] The behavior of the current in PEO at 10 V approaches the mono-exponential decay and starts to deviate from the power law. This suggests the presence of polarization effect.…”

Section: Resultsmentioning

confidence: 94%

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PEO‐PVP‐NaIO₄ Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

Hadjichristov

Ivanov

Marinov

et al. 2019

Physica Status Solidi (a)

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Ion‐conductive solid polymer electrolytes composed from blends of poly(ethylene oxide) (PEO) and poly(vinylpyrrolidone) (PVP), as complexed with the ionic compound sodium periodate (NaIO4), are inspected for the presence of electric charge trapping (CT) and ionic space charge polarization (SCP) under static electric field. Thin films (110 μm‐thick) of these materials are produced at a ratio of the polymers PEO:PVP = 70:30 wt%, the concentration of NaIO4 is 5, 7.5, or 10 wt%. The electrical current at room temperature, as well as the charging/discharging in the films are studied as depending on applied voltage and time. At a detectable level, no SCP and CT processes in PEO‐PVP‐NaIO4 are evidenced, in contrast to identical experiments by PEO film under the same experimental conditions. The largely reduced SCP and CT are of importance for electrochemical applications of the considered ion‐conducting PEO‐PVP‐NaIO4 ion‐polymer coupled system.

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Section: Resultssupporting

confidence: 80%

Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 94%

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PEO‐PVP‐NaIO₄ Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

Hadjichristov

Ivanov

Marinov

et al. 2019

Physica Status Solidi (a)

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“…3.2b Dielectric constant and dielectric loss: The values of dielectric constant (see figure 8a) and dielectric loss (inset in figure 8b) are observed to be increasing with increase in temperature. It is observed that more dielectric loss occurs at higher temperatures, which is due to more number of possible rotational and vibrational modes at higher temperatures [53,54]. As observed in figure 8a and b, the decrease in ε and ε with frequency implies that dipoles are unable to orient themselves with the applied field at higher frequency, when compared with lower frequency.…”

Section: 1e Electric Modulusmentioning

confidence: 83%

Dielectric relaxation in a cadmium chloride-doped polymeric blend

Baraker

Lobo

2019

Bull Mater Sci

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The temperature-and frequency-dependent relaxation processes in films of a polymeric blend comprising a polyvinyl alcohol (PVA)/polyvinyl acetate (PVAc) co-polymer blended with polyvinyl pyrrolidone (PVP) in equal proportion by weight, and doped with an inorganic metallic salt, cadmium chloride (CdCl 2), at 0.0 wt% and 10.2 wt% doping levels (DLs), have been studied using dielectric relaxation spectroscopy (DRS). The frequency response of dielectric parameters for these samples has been studied with variation in temperature, from 303 up to 373 K, at different fixed frequencies (from 12 Hz up to 200 kHz). Study of Cole-Cole plots reveals a decrease in bulk resistivity of the samples with increase in temperature, which is attributed to thermally induced increase in the mobility of polymer chains. A 10-fold increase in bulk conductivity is observed for doped films with a DL of 10.2 wt%, when compared with the bulk conductivity of the un-doped (0.0 wt% DL) sample. The temperature dependence of dielectric parameters at different frequencies has been studied and the activation energy has been calculated. The relaxation time is found to be of the order of a few milliseconds, which implies that electrical conduction in CdCl 2-doped PVA/PVAc-PVP blend films is predominantly due to the migration of ions. The variation of AC conductivity with frequency is in agreement with Jonscher's universal power law. AC conductivity of the sample is found to increase significantly with an increase in temperature of the sample. Frequency-dependent dielectric properties of CdCl 2-doped PVA/PVAc-PVP blend films, for various DLs, are also studied at room temperature.

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Preparation and characterization of pva based solid polymer electrolytes for electrochemical cell applications

Polu

Kumar

2013

Chin J Polym Sci

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Dilectric and thermal properties of PEO doped with cadimium chloride salt

Cited by 8 publications

References 28 publications

PEO‐PVP‐NaIO₄ Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

PEO‐PVP‐NaIO₄ Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

Dielectric relaxation in a cadmium chloride-doped polymeric blend

Preparation and characterization of pva based solid polymer electrolytes for electrochemical cell applications

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Dilectric and thermal properties of PEO doped with cadimium chloride salt

Cited by 8 publications

References 28 publications

PEO‐PVP‐NaIO4 Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

PEO‐PVP‐NaIO4 Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

Dielectric relaxation in a cadmium chloride-doped polymeric blend

Preparation and characterization of pva based solid polymer electrolytes for electrochemical cell applications

Contact Info

Product

Resources

About

PEO‐PVP‐NaIO₄ Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping

PEO‐PVP‐NaIO₄ Ion‐Conducting Polymer Electrolyte: Inspection for Ionic Space Charge Polarization and Charge Trapping