Dielectric behavior and FTIR studies of xanthan gum-based solid polymer electrolytes

Pawlicka, Agnieszka; Tavares, Fabiele C.; Dörr, Dóris Sippel; Cholant, Camila M.; Ely, Fernando; Santos, Marcos José Leite; Avellaneda, César O.

doi:10.1016/j.electacta.2019.03.055

Cited by 103 publications

(53 citation statements)

References 45 publications

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“…The PCSH1 exemplified roughly constant behavior, whereas the PCSH2 showed a steady increase. Correspondingly, the ion dispersion was reduced as the dielectric constant dropped quickly at the high-frequency region, decaying to a constant value of 1.2 when log (f) reached above 4 [59,60]. It is obvious in Figure 4a as the amount of the doped salt increased up to 40 wt.% of NH4SCN, the value of the dielectric constant gradually increased.…”

Section: Dielectric and Electrical Modulus Studymentioning

confidence: 92%

Synthesis of Porous Proton Ion Conducting Solid Polymer Blend Electrolytes Based on PVA: CS Polymers: Structural, Morphological and Electrochemical Properties

et al. 2020

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In this study, porous cationic hydrogen (H+) conducting polymer blend electrolytes with an amorphous structure were prepared using a casting technique. Poly(vinyl alcohol) (PVA), chitosan (CS), and NH4SCN were used as raw materials. The peak broadening and drop in intensity of the X-ray diffraction (XRD) pattern of the electrolyte systems established the growth of the amorphous phase. The porous structure is associated with the amorphous nature, which was visualized through the field-emission scanning electron microscope (FESEM) images. The enhancement of DC ionic conductivity with increasing salt content was observed up to 40 wt.% of the added salt. The dielectric and electric modulus results were helpful in understanding the ionic conductivity behavior. The transfer number measurement (TNM) technique was used to determine the ion (tion) and electron (telec) transference numbers. The high electrochemical stability up to 2.25 V was recorded using the linear sweep voltammetry (LSV) technique.

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Section: Dielectric and Electrical Modulus Studymentioning

confidence: 92%

Synthesis of Porous Proton Ion Conducting Solid Polymer Blend Electrolytes Based on PVA: CS Polymers: Structural, Morphological and Electrochemical Properties

et al. 2020

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“…The incorporation of LiBr dopants into the alginate improved the ionic conductivity of BBPEs. Generally, a typical ionic conductivity spectrum as a function of frequency has three regions: (i) low frequency dependent region, (ii) medium frequency plateau, and (iii) high frequency dependent region [8]. It can be observed that the conductance spectra for present alginate-LiBr BBPEs comprise three regions.…”

Section: Resultsmentioning

confidence: 92%

Influence of Lithium Bromide on Electrical Properties in Bio-based Polymer Electrolytes

Fuzlin

Sahraoui

Samsudin

2020

MST

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“…The tan δ is a ratio of energy disperse to energy stored in a periodical field, which is also known as the dissipation factor [ 78 ]. The tan δ is determined using the relation below [ 78 ].

…”

Section: Resultsmentioning

confidence: 99%

“…Based on Figure 9 , the electrical modulus values are observed to stay near zero at low frequency in both plots. The long tail detected at low frequency proposes the capacitive behavior of the electrolytes where the strong electrode polarization occurs without any dispersion [ 36 , 78 ]. Along with the frequency, the M ′ and M ″ values of the electrolytes are observed to increase, due to the bulk effect.…”

Section: Resultsmentioning

confidence: 99%

The Study of Plasticized Sodium Ion Conducting Polymer Blend Electrolyte Membranes Based on Chitosan/Dextran Biopolymers: Ion Transport, Structural, Morphological and Potential Stability

et al. 2021

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The polymer electrolyte system of chitosan/dextran-NaTf with various glycerol concentrations is prepared in this study. The electrical impedance spectroscopy (EIS) study shows that the addition of glycerol increases the ionic conductivity of the electrolyte at room temperature. The highest conducting plasticized electrolyte shows the maximum DC ionic conductivity of 6.10 × 10−5 S/cm. Field emission scanning electron microscopy (FESEM) is used to investigate the effect of plasticizer on film morphology. The interaction between the electrolyte components is confirmed from the existence of the O–H, C–H, carboxamide, and amine groups. The XRD study is used to determine the degree of crystallinity. The transport parameters of number density (n), ionic mobility (µ), and diffusion coefficient (D) of ions are determined using the percentage of free ions, due to the asymmetric vibration (υas(SO3)) and symmetric vibration (υs(SO3)) bands. The dielectric property and relaxation time are proved the non-Debye behavior of the electrolyte system. This behavior model is further verified by the existence of the incomplete semicircle arc from the Argand plot. Transference numbers of ion (tion) and electron (te) for the highest conducting plasticized electrolyte are identified to be 0.988 and 0.012, respectively, confirming that the ions are the dominant charge carriers. The tion value are used to further examine the contribution of ions in the values of the diffusion coefficient and mobility of ions. Linear sweep voltammetry (LSV) shows the potential window for the electrolyte is 2.55 V, indicating it to be a promising electrolyte for application in electrochemical energy storage devices.

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Dielectric behavior and FTIR studies of xanthan gum-based solid polymer electrolytes

Cited by 103 publications

References 45 publications

Synthesis of Porous Proton Ion Conducting Solid Polymer Blend Electrolytes Based on PVA: CS Polymers: Structural, Morphological and Electrochemical Properties

Synthesis of Porous Proton Ion Conducting Solid Polymer Blend Electrolytes Based on PVA: CS Polymers: Structural, Morphological and Electrochemical Properties

Influence of Lithium Bromide on Electrical Properties in Bio-based Polymer Electrolytes

The Study of Plasticized Sodium Ion Conducting Polymer Blend Electrolyte Membranes Based on Chitosan/Dextran Biopolymers: Ion Transport, Structural, Morphological and Potential Stability

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