Composite Polymer Electrolytes: Nanoparticles Affect Structure and Properties

Wang, Wei; Alexandridis, Paschalis

doi:10.3390/polym8110387

Cited by 111 publications

(62 citation statements)

References 189 publications

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“…353 K, which can be observed in figure 7b. As the temperature is increased, the amount of free ions also increase which in turn decreases the value of M [37,38]. The frequency dependence of M at 298 K is displayed in figure 8a.…”

Section: Electrical Modulus Analysismentioning

confidence: 99%

Dextran from Leuconostoc mesenteroides-doped ammonium salt-based green polymer electrolyte

et al. 2019

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Biopolymer electrolytes based on dextran from Leuconostoc mesenteroides doped with ammonium nitrate (NH 4 NO 3) are synthesized via a solution cast method. Fourier transform infrared analysis is used to determine the complexation between cation from the salt with functional groups of dextran. The ionic conductivity of undoped dextran film at room temperature is identified as (8.24 ± 0.31) × 10 −11 S cm −1. A conductivity of (3.00 ± 1.60) × 10 −5 S cm −1 is achieved with the inclusion of 20 wt% NH 4 NO 3 to the pure dextran film. The conductivity at a high temperature of the electrolyte obeys Arrhenius theory. Field emission scanning electron microscopy results show that the highest conducting sample has a porous surface. Results from the dielectric study show a non-Debye characteristic.

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Section: Electrical Modulus Analysismentioning

confidence: 99%

Dextran from Leuconostoc mesenteroides-doped ammonium salt-based green polymer electrolyte

et al. 2019

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“…Also, at a particular temperature, the value of ∆ ε for the SPE‐2 film is higher than that for the SPE‐1 film. This enhancement of ∆ ε indicates an increase of ionic polarization , which results from reduced ion pairing with the addition of filler and elevated temperature.…”

Section: Dielectric Studymentioning

confidence: 99%

Dielectric Modulus and Conductivity Scaling Approach to the Analysis of Ion Transport in Solid Polymer Electrolytes

Tripathi

Shukla

Thakur

et al. 2019

Polymer Engineering & Sci

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Solid polymer electrolyte films (SPEs) based on poly(methyl methacrylate) are prepared using a solution cast technique. The temperature-dependent behavior of dielectric, modulus spectra and ac conductivity has been investigated. The long tail of the real part of modulus (M 0 ) in the low frequency indicates the capacitive nature of the samples. The frequency dependence of imaginary part of modulus (M 00 ) shows a non-Debye relaxation that has been explained using the Kohlrausch-Williams-Watts stretched exponential function. The activation energy for the relaxation is almost same as the activation energy for the conduction. The relaxation time obtained from the tangent loss graph (τ δ ) is about two orders of magnitude larger than that obtained from the imaginary part of modulus graph (τ m ). The ac conductivity has been found to obey Jonscher's universal power law. Transport parameters show that addition of filler creates additional hopping sites for the charge carriers and also increases the charge carrier density. It is also observed that the higher ionic conductivity at higher temperature is due to increased thermally activated hopping rates accompanied by a significant increase in carrier concentration. The contribution of carrier concentration to the total conductivity is also confirmed from Summerfield scaling. POLYM. ENG. SCI., 60:297-305, 2020.

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“…The approach presented in this study is to introduce additional, inert ceramic particles into the solid electrolyte layer in order to increase mechanical strength. The addition of such particles has been investigated in the context of achieving higher ionic conductivity by using submicron-sized particles [28,32,33], neglecting the influence on the mechanical stability. In this study, larger particles (~5 µm) were used in order to achieve maximum mechanical stability without negatively influencing ionic transport in the polymer electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Mechanical and Electrical Behavior of Polyethylene Oxide-Based Solid Electrolytes for All-Solid State Lithium-Ion Batteries

et al. 2019

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Mechanical and electrochemical stability are key issues for large-scale production of solid state Li-ion batteries. Polymer electrolytes can provide good ionic conductivity, but mechanical strength needs to be improved. In this study, we investigate the correlation of mechanical and electrical properties of poly (ethylene oxide) (PEO)-based solid electrolytes for Li-ion batteries. The influence of alumina and LiClO4 addition are investigated. Differential scanning calorimetry (DSC) is used to study the thermal behavior of salt-free and salt-containing samples and to identify the melting temperature. Dynamic mechanical analysis reveals the elastic properties as a function of temperature. Electrochemical properties are investigated using impedance spectroscopy. It is found that addition of alumina increases mechanical strength, while LiClO4 decreases it. Addition of LiClO4 and Al2O3 increases ionic conductivity and improves mechanical properties. However, there is no overlapping window of high mechanical strength and high ionic conductivity.

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Composite Polymer Electrolytes: Nanoparticles Affect Structure and Properties

Cited by 111 publications

References 189 publications

Dextran from Leuconostoc mesenteroides-doped ammonium salt-based green polymer electrolyte

Dextran from Leuconostoc mesenteroides-doped ammonium salt-based green polymer electrolyte

Dielectric Modulus and Conductivity Scaling Approach to the Analysis of Ion Transport in Solid Polymer Electrolytes

Correlation of Mechanical and Electrical Behavior of Polyethylene Oxide-Based Solid Electrolytes for All-Solid State Lithium-Ion Batteries

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