Biopolymeric electrolyte based on glycerolized methyl cellulose with NH4Br as proton source and potential application in EDLC

Kadir, M. F. Z.; Salleh, N. S.; Hamsan, M. H.; Aspanut, Zarina; Majid, Nazia Abdul; Shukur, M. F.

doi:10.1007/s11581-017-2330-4

Cited by 74 publications

(41 citation statements)

References 42 publications

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“…Importantly, it is also evident from the discharge curves that the linear characteristics of the assembled cell represent SCs [75]. Figure 11 shows the way of calculating specific capacitance (C s ) of the EDLC using Equation (3). At the 1stcycle, C s = 67.5 F/g of the EDLC was obtained.…”

Section: Charge-discharge Studymentioning

confidence: 99%

“…Carbon materials have been used as the backbone materials in EDLC electrodes, activated carbon being the most popular one. Many attempts have been made to study the compatibility of this material with polymer electrolytes [3][4][5][6][7]. In addition, cost-effective, relatively high electronic conductivity and satisfactory chemical stability are among the unique characteristics of activated carbon [8].…”

Section: Introductionmentioning

confidence: 99%

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Structural, Impedance and Electrochemical Characteristics of Electrical Double Layer Capacitor Devices Based on Chitosan: Dextran Biopolymer Blend Electrolytes

et al. 2020

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This report presents the preparation and characterizations of solid biopolymer blend electrolyte films of chitosan as cationic polysaccharide and anionic dextran (CS: Dextran) doped with ammonium iodide (NH4I) to be utilized as electrolyte and electrode separator in electrical double-layer capacitor (EDLC) devices. FTIR and XRD techniques were used to study the structural behavior of the films. From the FTIR band analysis, shifting and broadening of the bands were observed with increasing salt concentration. The XRD analysis indicates amorphousness of the blended electrolyte samples whereby the peaks underwent broadening. The analysis of the impedance spectra emphasized that incorporation of 40 wt.% of NH4I salt into polymer electrolyte exhibited a relatively high conductivity (5.16 × 10−3 S/cm). The transference number measurement (TNM) confirmed that ion (tion = 0.928) is the main charge carriers in the conduction process. The linear sweep voltammetry (LSV) revealed the extent of durability of the relatively high conducting film which was 1.8 V. The mechanism of charge storage within the fabricated EDLC has been explained to be fully capacitive behavior with no redox peaks appearance in the cyclic voltammogram (CV). From this findings, four important parameters of the EDLC; specific capacitance, equivalent series resistance, energy density and power density were calculated as 67.5 F/g, 160 ohm, 7.59 Wh/kg and 520.8 W/kg, respectively.

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Section: Charge-discharge Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural, Impedance and Electrochemical Characteristics of Electrical Double Layer Capacitor Devices Based on Chitosan: Dextran Biopolymer Blend Electrolytes

et al. 2020

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“…The optimum conductivity of (2.11 ± 1.43) × 10 −5 S cm −1 is achieved on addition of 20 wt% NH 4 NO 3 . On addition of 5-20 wt% NH 4 NO 3 , the conductivity increases due to charge carrier enhancement and the polymer segment's movement is promoted [24]. Beyond 20 wt% NH 4 NO 3 , the number of charge carriers decrease and thus lessen the conductivity value.…”

Section: Ftir 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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“…NH 4 F dissolves in polymeric network of dextran providing free ions such cations (NH 4 + or H + ) and anions (F -). More ions are available for ionic migration as more salt is added, thus improve the ionic conductivity [10]. Temperature dependence conductivity.…”

Section: Resultsmentioning

confidence: 99%

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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Biopolymeric electrolyte based on glycerolized methyl cellulose with NH4Br as proton source and potential application in EDLC

Cited by 74 publications

References 42 publications

Structural, Impedance and Electrochemical Characteristics of Electrical Double Layer Capacitor Devices Based on Chitosan: Dextran Biopolymer Blend Electrolytes

Structural, Impedance and Electrochemical Characteristics of Electrical Double Layer Capacitor Devices Based on Chitosan: Dextran Biopolymer Blend Electrolytes

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

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

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