Effect of Anion Size on the Conductivity Behaviour of Hexanoyl Chitosan-Based Polymer Electrolytes

Winie, Tan; Muhammad, F.H.; Rosli, Nurul Hazwani Aminuddin

doi:10.4028/www.scientific.net/amr.545.317

Cited by 6 publications

(3 citation statements)

References 11 publications

(10 reference statements)

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“…This value is higher than addition of LGPS (Li10GeP2S12) in PEO-LiTFSI which reported by Zhao et al [11] and PEO-LiCF3SO3-GO (Graphene oxide) system (9.03 x 10 -6 S.cm -1 ) which reported by Mohanta et al The HNT contains lumen space as 10.7-39% [12]. This space provides the possibility for the reaction between anion of salt (CF3SO3 -, ionic radius is 0.270 nm) and aluminal (Al-OH) inside the empty lumen structures of HNT (diameter of lumen is 20-40 nm), results the higher degree of salt dissociation in SPE [12,13]. Thus, offers a high ionic conductivity at room temperature [14].…”

Section: Resultsmentioning

confidence: 90%

Effects of Natural Clay on Ionic Conductivity, Crystallinity and Thermal Properties of PEO-LiCF3SO3-Natural Clay as Solid Polymer Electrolyte Nanocomposites

Pongsuk

Pumchusak

2019

KEM

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The polymer nanocomposites of PEO-LiCF3SO3 based solid polymer electrolyte were prepared using two kinds of natural clays, which are halloysite nanotube (HNT) and montmorillonite (MMT) nanoparticle. Different contents (0, 1, 5 and 10wt %) of halloysite nanotube (HNT) and montmorillonite (MMT) nanoparticle were explored. Solid polymer electrolyte nanocomposite film was prepared by solution casting method. The ionic conductivity, crystallinity and thermal properties of solid polymer electrolyte membranes were studied by impedance spectroscopy, X-ray diffraction (XRD) and differential scanning calorimetry (DSC), respectively. It was found that HNT provided higher ionic conductivity for solid polymer electrolyte nanocomposite than what MMT did. The highest ionic conductivity at room temperature was found at 5% HNT as 2.068 x 10-5 S.cm-1. The ion-polymer interactions between PEO-LiCF3SO3 and natural clay nanoparticle were investigated by using Fourier transform infrared (FTIR) spectra. The PEO-LiCF3SO3-5%HNT showed good oxidative stability than PEO-LiCF3SO3 composite.

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Section: Resultsmentioning

confidence: 90%

Effects of Natural Clay on Ionic Conductivity, Crystallinity and Thermal Properties of PEO-LiCF3SO3-Natural Clay as Solid Polymer Electrolyte Nanocomposites

Pongsuk

Pumchusak

2019

KEM

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“…According to literature, the bonds located at 1032 cm −1 , 1042 cm −1 , and 1056 cm −1 are assigned to free ions, ion pairs, and ion clusters, respectively [35,36]. FTIR spectra of PEO20%LiCF3SO3 displayed peaks from both ion pairs and free ions, which were located at 1041, 1029 cm −1 , respectively.…”

Section: Effect Of Ultrasonication On Peo−licf 3 So 3 −Hnt Complexmentioning

confidence: 90%

Effect of Ultrasonication on the Morphology, Mechanical Property, Ionic Conductivity, and Flame Retardancy of PEO-LiCF3SO3-Halloysite Nanotube Composites for Use as Solid Polymer Electrolyte

Pongsuk

Pumchusak

2022

Polymers

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PEO-LiCF3SO3-halloysite nanotube (HNT) composites were fabricated by solution casting together with hot compression to form a solid polymer electrolyte (SPE) membrane. Different ultrasonic exposure times were used to disperse HNT nanoparticles in the PEO-20%LiCF3SO3-HNT composite solutions prior to casting. An exposure time of 15 min gave the highest ionic conductivity in the SPE membrane, the ionic conductivity significantly increased by two orders of magnitude from 6.6 × 10−6 to 1.1 × 10−4 S/cm. TEM, FE-SEM, and EDS-mapping were used to study the dispersion of HNTs in the SPE membrane. ATR-FTIR revealed that the bonding of PEO-LiCF3SO3 and PEO-HNT was created. XRD and DSC showed a reduction in the crystallinity of PEO due to HNT addition. The ultrasonication for an optimal period gave uniform dispersion of HNT, reduced the polymer crystallinity and strengthened the tensile property of SPE membrane. Moreover, the electrochemical stability, flame retardance and dimensional stability were improved by the addition of HNT and by ultrasonication.

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“…Polymer electrolytes are widely investigated due to their potential applications in electrochemical devices such as rechargeable batteries, fuel cells, supercapacitors and solar cell. We have developed hexanoyl chitosan based polymer electrolytes [1][2][3][4][5][6]. We have increased the mechanical property of hexanoyl chitosan by blending it with polystyrene [7].…”

Section: Introductionmentioning

confidence: 99%

Effect of H2SO4 Treated TiO2 Nano Fillers on the AC Conductivity of Hexanoyl Chitosan-Polystyrene-LiCF3SO3 Polymer Electrolytes

Winie

Shahril

Hanif

et al. 2013

AMR

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Hexanoyl chitosan exhibited solubility in tetrahydrofuran (THF) was prepared by acyl modification of chitosan. Polystyrene with molecular weight 280,000 g mol-1 was chosen to blend with hexanoyl chitosan. LiCF3SO3 was employed as the doping salt. Untreated and H2SO4 treated TiO2 was added as the filler. Films of hexanoyl chitosan-polystyrene-LiCF3SO3-TiO2 polymer electrolyte were obtained by solution casting technique. The ac conductivity of the sample was calculated from the relation σac = εoεiω, where εo is the permittivity of the free space, the angular frequency, ω=2πf, and εi is the dielectric loss. The ac conductivity dispersion observed is analyzed using the Jonshers universal power law, σ (ω) = σdc + Aωn where A is a pre-exponential constant and n is the power law exponent with value in the range 0 < n < 1. The temperature dependence of exponent n will then be interpreted using the existing theoretical models.

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Effect of Anion Size on the Conductivity Behaviour of Hexanoyl Chitosan-Based Polymer Electrolytes

Cited by 6 publications

References 11 publications

Effects of Natural Clay on Ionic Conductivity, Crystallinity and Thermal Properties of PEO-LiCF<sub>3</sub>SO<sub>3</sub>-Natural Clay as Solid Polymer Electrolyte Nanocomposites

Effects of Natural Clay on Ionic Conductivity, Crystallinity and Thermal Properties of PEO-LiCF<sub>3</sub>SO<sub>3</sub>-Natural Clay as Solid Polymer Electrolyte Nanocomposites

Effect of Ultrasonication on the Morphology, Mechanical Property, Ionic Conductivity, and Flame Retardancy of PEO-LiCF3SO3-Halloysite Nanotube Composites for Use as Solid Polymer Electrolyte

Effect of H<sub>2</sub>SO<sub>4</sub> Treated TiO<sub>2</sub> Nano Fillers on the AC Conductivity of Hexanoyl Chitosan-Polystyrene-LiCF<sub>3</sub>SO<sub>3</sub> Polymer Electrolytes

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