Effect of TiO2 Nano-Filler on Electrical Properties of Na+ Ion Conducting PEO/PVDF Based Blended Polymer Electrolyte

Ganta, Kiran Kumar; Jeedi, Venkata Ramana; Katrapally, Vijaya Kumar; Mallaiah, Yalla; Emmadi, Laxmi Narsaiah

doi:10.1007/s10904-021-01947-w

Cited by 23 publications

(6 citation statements)

References 55 publications

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“…Similar to salt dispersed chitosan biopolymer electrolytes two depressed semicircles are observed whereas the diameter of these semicircles has been reduced extensively that resulted in the augmentation of ionic conductivity values and for the electrolyte with 2 wt% of ller C2Mn achieving the highest value by an increase of one order of magnitude (1.25x10 − 3 S cm − 1 ). This is due to the fact that the crystalline phase in the salt dispersed chitosan polymer matrix is disrupted with the addition of MnO 2 ller, and similar observations have been reported in the literature [42]. This is also in consistent with the decrease in degree of crystallinity and T g values obtained from XRD and DSC analysis, which further con rms the decrease in the tendency of polymer chains to reorganise due to weakening of coordinative bonds between cations and electron rich groups in polymer with the addition of ller.…”

supporting

confidence: 78%

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Helen

Selvin

Lakshmi³

et al. 2022

Polym. Bull.

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In the present work, the signi cance of adding MnO 2 ller towards development of biopolymer electrolyte, chitosan with enhanced ionic conductivity has been reported. The complexation that has taken place with the inclusion of MgNO 3 .6H 2 O salt and MnO 2 ller in the chitosan matrix has been investigated through the Fourier Transform Infra Red (FTIR) spectra analysis. Further, the transport parameter values such as number of charge carrier densities (n), mobility (µ) and diffusion coe cient (D) have been calculated from the deconvoluted FTIR spectra. X-Ray Diffraction (XRD) and Differential Scanning Calorimetric (DSC) examination revealed that the inclusion of ller signi cantly reduced the degree of crystallinity and the glass transition T g values respectively. These ndings show that the inclusion of ller increases the segmental mobility of the polymer chains, allowing for faster ion transport. The conduction properties of the prepared electrolytes has been determined using Alternating Current (AC) impedance analysis, with the electrolyte containing 60 wt% magnesium salt (2.6 ± 0.08) х 10 − 4 S cm − 1 achieving the maximum ionic conductivity value at room temperature (303K). This value is further increased by one order of magnitude with the addition of MnO 2 ller into the polymer matrix (1.25 ± 0.09) х 10 − 3 S cm − 1 . To elucidate the individual contributions of ions and electrons in the conduction process, the Direct Current (DC) polarisation method has been used to determine the transference number (t ion ) of the produced electrolytes. The ller added chitosan polymer exhibits an extended electrochemical stability window, 1.7 V as determined by Linear Sweep Voltammetry (LSV).

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supporting

confidence: 78%

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Helen

Selvin

Lakshmi³

et al. 2022

Polym. Bull.

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“…Moreover, the conductivity of TiO2 is found to be frequency independent whereas pure TiO2 shows strong frequency dependence in the entire frequency regime. With the increase of filler content (x), charge conductivity is found to increase as there is increase in charge carriers contributed by TiO2 at 300 K. Steady increase of charge conductivity with frequency also implies presence of hopping type conductivity between conducting regions [10]. At x = 80, maximum conductivity of charge carriers is observed which further supports the second peak of dielectric constant after which the system percolates classically.…”

Section: Ac Conductivitymentioning

confidence: 57%

“…KK Ganta, et.al had synthesized the nanocomposite polymer electrolyte (NCPE) films of 80wt% Poly (ethylene oxide) (PEO)/20wt% Poly (vinylidene fluoride) (PVDF) + 7.5wt% sodium perchlorate (NaClO4) + x wt% titanium dioxide (TiO2) ; where (x = 3, 6, 9, 12, 15, and 18) by using solution-caste technique. The effect of TiO2 Nano-filler concentration on the structural, morphological, ionic conduction and dielectric polarization were studied [10]. Mohan L. Verma, et.al had used the optimum conducting solid polymer electrolyte of polymer poly ethylene oxide (PEO) and salt silver nitrate (AGNO3) as host matrix and TiO2 as filler in order to discuss the ionic conductivity and dielectric properties of the solid nanocomposite polymer electrolytes [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of TiO₂as Filler in NaCl: Possible Applications in Ionic Storage Systems

Kour

Mukherjee

2022

J. Phys.: Conf. Ser.

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High dielectric capacitors are increasingly used for energy storage in sustainable nanotechnologies. Here, we observed large enhancement of dielectric constant by 3 order at frequency 1kHz with moderate loss when TiO2 is added as a filler in NaCl bulk matrix. The TiO2 nanoparticles are synthesized via sol gel process and is subsequently added in varying weight percentage x in the ionic matrix of NaCl, which is represented as TiO2(x)NaCl. The parameters like dielectric constant, dissipation Loss and ac conductivity are measured with varying fraction of TiO2 in frequency range less than 25 KHz. The steady increase of dielectric constant with increasing filler content at low frequency indicates percolation type behavior which accounts for the first dielectric peak at x= 50. The dielectric loss is found to be around 1 for x< 45 whereas it tends to increases with higher filler fraction. Moreover, the frequency dependent polarization in this composite system also accounts for hopping type behavior of mobile charge carriers contributed by TiO2 as confirmed from ac conductivity measurement. Further, the samples are characterized by X-ray diffraction and Field emission scanning electron microscopy in order to study the structure and morphology of the samples. Overall, TiO2 incorporation strongly improves the dielectric behavior of the ionic matrix at low frequency, making it suitable for super dielectric material (SDM).

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“…σ'(ω) = σ 0 + Aω n where σ'(ω) is the conductivity at a speci c frequency, σ 0 is the frequency-independent conductivity at low frequencies, A is a constant and 𝑛 is the frequency-exponent [52]. From gure 7(a), it can be seen that PPNES-8 system has the highest conductivity among all CSPE systems.…”

Section: Ionic Conductivitymentioning

confidence: 99%

Influence of Silica nano particles on Structural, Electrical and Dielectric properties of PEO/PVdF/NaNO3/EC based Composite Solid Polymer Electrolytes

Mallaiah¹,

Jeedi²,

Ganta³

et al. 2022

Preprint

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Composite solid polymer electrolyte systems (CSPEs) have been synthesized using Polyethylene oxide (PEO), and Polyvinylidene fluoride (PVdF) blend as the host polymer matrix. Sodium nitrate (NaNO3) salt as ion dopant, ethylene carbonate (EC) as a plasticizer and silicon dioxide (SiO2) as nanofiller have been used in the preparation of CSPEs by solution casting method. CSPEs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The electrical, dielectric and electric modulus properties of the CSPEs were studied using impedance spectroscopy in the frequency range of 100 Hz to 10 MHz between the temperatures 298K and 343K. The ionic conductivity evaluated from impedance studies showed a maximum (2.107x10-4 S cm-1) for 8 wt% of SiO2 nanofiller. It was attributed to the increase in amorphous nature and conducting paths with the addition of SiO2. Wagner’s polarization method has been used to determine the ionic transport number.

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Effect of TiO2 Nano-Filler on Electrical Properties of Na+ Ion Conducting PEO/PVDF Based Blended Polymer Electrolyte

Cited by 23 publications

References 55 publications

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Effect of TiO₂as Filler in NaCl: Possible Applications in Ionic Storage Systems

Influence of Silica nano particles on Structural, Electrical and Dielectric properties of PEO/PVdF/NaNO3/EC based Composite Solid Polymer Electrolytes

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Effect of TiO2 Nano-Filler on Electrical Properties of Na+ Ion Conducting PEO/PVDF Based Blended Polymer Electrolyte

Cited by 23 publications

References 55 publications

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Effect of TiO2as Filler in NaCl: Possible Applications in Ionic Storage Systems

Influence of Silica nano particles on Structural, Electrical and Dielectric properties of PEO/PVdF/NaNO3/EC based Composite Solid Polymer Electrolytes

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Effect of TiO₂as Filler in NaCl: Possible Applications in Ionic Storage Systems