Dielectric relaxation studies on [PEO–SiO2]:NH4SCN nanocomposite polymer electrolyte films

Agrawal, S. L.; Singh, Manoj Kumar; Tripathi, Mridula; Dwivedi, Mrigank Mauli; Pandey, Kanti Bhooshan

doi:10.1007/s10853-009-3833-9

Cited by 98 publications

(39 citation statements)

References 28 publications

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“…on nano-sized SiO 2 , TiO 2 , and Al 2 O 3 in PEO-LiClO 4 electrolytes suggest that fillers can perform as solid plasticizers by kinetically inhibiting the reorganization of polymer chains [13,15,16]. Agrawal et al and Pandey et al showed that the crystallinity of PEO-NH 4 SCN and PEO-NH 4 HSO 4 decreased with the addition of nano-sized SiO 2 [17,18]. However, Zhang et al reported that nano-sized fumed SiO 2 increased the glass transition temperature, but had no effect on either crystallinity or conductivity of PEO-LiClO 4 [19].…”

Section: Introductionmentioning

confidence: 99%

The effects of SiO 2 and TiO 2 nanofillers on structural and electrochemical properties of poly(ethylene oxide)–EMIHSO 4 electrolytes

Ketabi

Lian

2015

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

The effects of SiO 2 and TiO 2 nanofillers on structural and electrochemical properties of poly(ethylene oxide)–EMIHSO 4 electrolytes

Ketabi

Lian

2015

Electrochimica Acta

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“…From the fundamental point of view, ionic conduction in polymer electrolytes is still poorly understood. Ion transport is complex and depends on factors such as salt concentration, dielectric constant of host polymer, degree of salt dissociation and ion aggregation, and mobility of polymer chains [17]. Dielectric analysis of ion conducting polymer electrolytes can provide information on ion transport behavior and ionic/molecular interaction in solid polymer electrolytes [18].…”

Section: Introductionmentioning

confidence: 99%

Electrical Conduction Mechanism in Solid Polymer Electrolytes: New Concepts to Arrhenius Equation

Aziz

Abidin

2013

Journal of Soft Matter

114

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Solid polymer electrolytes based on chitosan NaCF 3 SO 3 have been prepared by the solution cast technique. X-ray diffraction shows that the crystalline phase of the pure chitosan membrane has been partially disrupted. The fourier transform infrared (FTIR) results reveal the complexation between the chitosan polymer and the sodium triflate (NaTf) salt. The dielectric constant and DC conductivity follow the same trend with NaTf salt concentration. The increase in dielectric constant at different temperatures indicates an increase in DC conductivity. The ion conduction mechanism follows the Arrhenius behavior. The dependence of DC conductivity on both temperature and dielectric constant ( dc ( , ) = 0 − / ) is also demonstrated.

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“…As the frequency increases, the orientation polarization is not able to follow the alternation of the electric field. Hence, the amount of the charge accumulation decreases, which results in the decrease in the dielectric permittivity [29,30]. Furthermore, it is evident that the dielectric permittivity of the electrospun membranes increases significantly with the increase of AMPSLi content in the copolymer.…”

Section: Properties Of Electrospun P(mma-co-ampsli) Membranesmentioning

confidence: 95%

Performance enhancement induced by electrospinning of polymer electrolytes based on poly(methyl methacrylate-co-2-acrylamido-2-methylpropanesulfonic acid lithium)

et al. 2012

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A series of novel fibrous polymer electrolytes with high ionic conductivity based on electrospun poly (methyl methacrylate-co-2-acrylamido-2-methylpropanesulfonic acid lithium) (P(MMA-co-AMPSLi)) membranes were prepared and characterized. P(MMA-co-AMPSLi) was synthesized by free radical copolymerization of MMA and AMPS, followed by ion exchange of the H ? with Li ? . The fibrous polymer electrolytes were fabricated by immersing the electrospun P(MMA-co-AMPSLi) membranes into the liquid electrolyte. Fourier transform infrared spectroscopy and 1 H-nuclear magnetic resonance were used to characterize the structure of the copolymers. Thermogravimetric analysis was applied to investigate the thermal properties of the copolymers. Scanning electromicroscope was employed to observe the morphology of electrospun membranes before and after soaking the liquid electrolyte. AC impedance and linear sweep voltammetry were adopted to measure the electrochemical properties of the fibrous polymer electrolytes. The incorporation of the AMPSLi units effectively improved the electrospinnability of the copolymer, increased the dielectric constants of the electrospun membranes, and enhanced the dimensional stability by maintaining the pore structures even after the membranes absorbing large amounts of liquid electrolytes. As a result, the ionic conductivity of the polymer electrolytes increased with the increase in the molar ratio of AMPSLi units, and the highest ion conductivity was up to 4.12 9 10 -3 S cm -1 at room temperature. Meanwhile, the polymer electrolytes studied in this work exhibited a sufficient electrochemical stability (up to 5.0 V) that allows the safe operation in lithium-ion batteries.

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Dielectric relaxation studies on [PEO–SiO2]:NH4SCN nanocomposite polymer electrolyte films

Cited by 98 publications

References 28 publications

The effects of SiO 2 and TiO 2 nanofillers on structural and electrochemical properties of poly(ethylene oxide)–EMIHSO 4 electrolytes

The effects of SiO 2 and TiO 2 nanofillers on structural and electrochemical properties of poly(ethylene oxide)–EMIHSO 4 electrolytes

Electrical Conduction Mechanism in Solid Polymer Electrolytes: New Concepts to Arrhenius Equation

Performance enhancement induced by electrospinning of polymer electrolytes based on poly(methyl methacrylate-co-2-acrylamido-2-methylpropanesulfonic acid lithium)

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