Structural, electrical conductivity and dielectric behavior of Na2SO4–LDT composite solid electrolyte

Iqbal, M. Zafar; Rafi-Ud-Din, .

doi:10.1016/j.jare.2015.04.002

Cited by 42 publications

(17 citation statements)

References 35 publications

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“…At the area of low frequencies, the ε’ and ε’’ values are large because the SS blocking electrodes cause the accumulation of charges at the interfaces between the PEs and electrodes [ 54 ]. The ε’ and ε’’ reduction at the area of high frequencies is caused by the very rapid reversal period of applied EF that causes a decline in the dielectric constant [ 55 ].…”

Section: Resultsmentioning

confidence: 99%

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

et al. 2020

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In the present work, a novel polymer composite electrolytes (PCEs) based on poly(vinyl alcohol) (PVA): ammonium thiocyanate (NH4SCN): Cd(II)-complex plasticized with glycerol (Gly) are prepared by solution cast technique. The film structure was examined by XRD and FTIR routes. The utmost ambient temperature DC ionic conductivity (σDC) of 2.01 × 10−3 S cm−1 is achieved. The film morphology was studied by field emission scanning electron microscopy (FESEM). The trend of σDC is further confirmed with investigation of dielectric properties. Transference numbers of ions (tion) and electrons (tel) are specified to be 0.96 and 0.04, respectively. Linear sweep voltammetry (LSV) displayed that the PCE potential window is 2.1 V. The desired mixture of activated carbon (AC) and carbon black was used to fabricate the electrodes of the EDLC. Cyclic voltammetry (CV) was carried out by sandwiching the PCEs between two carbon-based electrodes, and it revealed an almost rectangular shape. The EDLC exhibited specific capacitance, energy density, and equivalent series resistance with average of 160.07F/g, 18.01Wh/kg, and 51.05Ω, respectively, within 450 cycles. The EDLC demonstrated the initial power density as 4.065 × 103 W/Kg.

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Section: Resultsmentioning

confidence: 99%

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

et al. 2020

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“…The disappearance of peak for other electrolyte is due to frequency limitation. The decrease in M imag value with the increase in temperature as shown in Figure 6(b) is attributed to the improvement of salt dissociation and polymeric segmental motion [22].…”

Section: Resultsmentioning

confidence: 84%

Influence of NH4F in Dextran Based Biopolymer Electrolytes: Conductivity and Electrical Analysis

Hamsan¹,

Kadir²,

Aziz³

et al. 2020

MST

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Dextran polymer host was doped with different concentrations of ammonium fluoride (NH 4 F) via casting technique. In this present work, dextran-NH 4 F film has been employed to investigate the ionic conductivity using electrochemical impedance spectroscopy from 50 to 5 MHz. The highest room temperature conductivity is achieved at (2.33 ± 0.76) × 10-3 S cm-1 with 40 wt.% NH 4 F. The electrolyte is found to obey Arrhenius rule at high temperature with activation energy of 0.21 eV. Dielectric analysis has been performed to obtain better understanding on the conductivity pattern. The dielectric parameters e.g. ɛ real , ɛ imag , M real , and M imag have been tested as a function of frequency at various temperature. The potential stability obtained for the highest electrolyte in this study is 1.58 V.

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“…In general, the sharp increase of ε′ and ε″ at low frequency regions are due to the accumulation of space‐charge carriers at the electrode–electrolyte interface and orientation of dipoles of localized molecular polar groups contributing to polarization . The space‐charge effect leads to the localization of charge carriers since the ions are unable to exchange with the SS blocking electrodes . These aspects further demonstrates the occurrence of non‐Debye characteristic or ω ( n ‐1) variation implying the non‐exponential of conductivity relaxation time where the ionic diffusion could be explained on the basis of space‐charge effect …”

Section: Resultsmentioning

confidence: 96%

“…The dielectric properties of solid materials may be well elucidated as a function of frequency of applied electric field to facilitate the better understanding of the ionic transport mechanism of any PE system. The dielectric response is commonly portrayed by the complex permittivity which is given by the equation:

ε^{*} = ε^{'} - j ε^{″}

where ε′ and ε″ are the real and imaginary parts of dielectric constant, representing the amount of energy stored in a dielectric material and energy loss, respectively …”

Section: Resultsmentioning

confidence: 99%

Zinc ion conducting blended polymer electrolytes based on room temperature ionic liquid and ceramic filler

Murali

Samuel

2019

J of Applied Polymer Sci

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Zinc ion conducting nanocomposite gel polymer electrolytes (NCGPEs) comprising of poly(vinyl chloride) (PVC)/poly(ethyl methacrylate) (PEMA) blend, zinc triflate [Zn(OTf)2] salt, 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIMTFSI) ionic liquid (IL) and fumed silica (SiO2) viz. [PVC/PEMA–Zn(OTf)2–EMIMTFSI–SiO2] exhibited the highest ionic conductivity value of 6.71 × 10−4 Scm−1 at room temperature. The ion–filler–polymer interactions and probable conformational changes observed in the structure of the gel composites due to the entrapment of IL and dispersion of nano‐sized SiO2 were confirmed from X‐ray diffraction (XRD) and Attenuated total reflection‐Fourier transform infrared (ATR‐FTIR) spectroscopy. Scanning electron microscopic (SEM) images of NCGPEs demonstrated uniform surface with abundant interconnected micropores. The cationic transport number of NCGPE samples has been found to be appreciably enhanced up to a maximum of 0.69 thus demonstrating a considerable improvement in Zn2+ ion conductivity. The NCGPE film possesses an electrochemical stability window up to 5.07 V (vs. Zn/Zn2+) and ensures feasible zinc stripping/plating in the redox process. The addition of SiO2 into the gel polymer electrolyte system has effectively reduced the glass‐transition temperature (Tg) of the NCGPE films and also accomplished improved thermal stability up to approximately 180 °C which were ascertained from Differential scanning calorimetry (DSC) and Thermogravimetric (TG) results. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47654.

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Structural, electrical conductivity and dielectric behavior of Na2SO4–LDT composite solid electrolyte

Abstract: Graphical abstract

Cited by 42 publications

References 35 publications

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

Influence of NH4F in Dextran Based Biopolymer Electrolytes: Conductivity and Electrical Analysis

Zinc ion conducting blended polymer electrolytes based on room temperature ionic liquid and ceramic filler

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