Hybrid composite polymer electrolytes: ionic liquids as a magic bullet for the poly(ethylene glycol)–silica network

Blensdorf, Tyler; Joenathan, Anisha; Hunt, M. O.; Werner‐Zwanziger, Ulrike; Stein, Barry D.; Mahmoud, Waleed E.; Al-Ghamdi, Ahmed A.; Carini, John P.; Bronstein, Lyudmila M.

doi:10.1039/c6ta09986f

Cited by 84 publications

(12 citation statements)

References 56 publications

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“…The dielectric constant and DC conductivity explains the relationship between these parameters (ε and σ dc ). This is can be interpreted based on the fact that the DC conductivity depends on charge carrier concentration and dielectric constant (ε) at room temperature [42]. It is seen that both dielectric constant and dielectric loss decreases with increasing frequency, but increases with increasing temperature.…”

Section: Resultsmentioning

confidence: 99%

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Bhalla

Rao²

2019

Heliyon

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Nanocomposite polymer (NCP) films were prepared by doping sodium acetate (CH3COONa) in polymer of polyvinyl pyrrolidone (PVP) by complete dispersion of aluminum oxide (Al2O3) with different wt% proportions using solution cast method. The acquired NCP films were systematically characterized. The crystalline structure of the prepared NCP films was confirmed by XRD. The little agglomeration and grain sizes involved in the films were analyzed by SEM. The chemical bond formation and interchange reaction between the host, dopant salt and the nanofiller were confirmed by FTIR and Raman. The lowest energy bandgap values were observed to be 3.0 eV for the synthesized film with wt% ratio of PVP + CH3COONa:Al2O3 (80:20:1%). The highest ionic conductivity was found to be 1.05 × 10−3 S/cm for the prepared film with wt% ratio of PVP + CH3COONa:Al2O3 (80:20:1%). From the charge discharge characteristics it was concluded that the film with wt% ratio of PVP + CH3COONa:Al2O3 (80:20:1%) possesses long durability when compared to the other prepared films.

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Section: Resultsmentioning

confidence: 99%

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Bhalla

Rao²

2019

Heliyon

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“…The highest room temperature conductivity obtained was 1.24 × 10 −3 S cm −1 for an IL content of 55 wt%. [ 123 ]…”

Section: Ionic Liquid‐based Polymer Composites and Their Applicationsmentioning

confidence: 99%

Ionic Liquid–Polymer Composites: A New Platform for Multifunctional Applications

Correia

Fernandes

Martins

et al. 2020

Adv Funct Materials

238

201

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Ionic liquids (ILs) have emerged as a novel class of chemical compounds for the development of advanced (multi)functional materials with outstanding potential in applications of several areas due to their unique properties and functionalities. The combination of ILs with polymers, in a composite, allows for developing smart materials, which synergistically combine the features of specific polymers and ILs. Moreover, ILs can be extensively modified by the incorporation of functional groups with specific properties into the cation, anion, or both. Thus, it is possible to tune the IL, the polymer, or both to obtain a broad spectrum of multifunctional composites and address the specific requirements of many applications. This work focusses on advanced materials and strategies concerning ILs and polymers for the development of smart IL/polymer‐based materials for applications including responsive and sensitive sensors, actuators, environment, batteries, fuel cells, and biomedical applications.

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“…ere are two organic functional groups, known as amine (-NH 2 ) and hydroxyl (-OH), on the CS backbone structure, which are responsible in complex formation with inorganic salts [4]. To minimise the crystalline region inside the polymer matrices resulting in an increase in the ionic conductivity, several methodologies have been adapted in this modification, such as crosslinking, polymer grafting, and polymer blending and incorporating inorganic fillers [5,6]. Recently, natural polymer blending has become an attractive methodology and strong alternative in replacing synthetic polymers in many applications.…”

Section: Introductionmentioning

confidence: 99%

Design of Polymer Blends Based on Chitosan:POZ with Improved Dielectric Constant for Application in Polymer Electrolytes and Flexible Electronics

Aziz

Hamsan

Kadir

et al. 2020

Advances in Polymer Technology

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There is a considerable demand for the development and application of polymer materials in the flexible electronic- and polymer-based electrolyte technologies. Chitosan (CS) and poly(2-ethyl-2-oxazoline) (POZ) materials were blended with different ratios to obtain CS:POZ blend films using a straightforward solution cast technique. The work was involved a range of characteristic techniques, such as impedance spectroscopy, X-ray diffraction (XRD), and optical microscopy. From the XRD spectra, an enhancement in the amorphous nature in CS:POZ blend films was revealed when compared to the pure state of CS. The enhancement was verified from the peak broadening in CS:POZ blend films in relative to the one in crystalline peaks of the CS polymer. The optical micrograph study was used to designate the amorphous and crystalline regions by assigning dark and brilliant phases, respectively. Upon increasing POZ concentration, the dielectric constant was found to increase up to ɛ′ = 6.48 (at 1 MHz) at 15 wt.% of POZ, and then a drop was observed beyond this amount. The relatively high dielectric constant and dielectric loss were found at elevated temperatures. The increase of POZ concentration up to 45 wt.% made the loss tangent to shift to the lower frequency side, which is related to increasing resistivity. The increases of dielectric constant and dielectric loss with temperature were attributed to the increase of polarisation. The loss tangent peaks were found to shift to the higher frequency side as temperature elevated. Obvious relaxation peaks were observed in the imaginary part of electric modulus, and no peaks were found in the dielectric loss spectra. The concentration dependent of M″ peaks was found to follow the same trend of loss tangent peaks versus POZ content. The relaxation process was studied in terms of electric modulus parameters.

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Hybrid composite polymer electrolytes: ionic liquids as a magic bullet for the poly(ethylene glycol)–silica network

Abstract: Ionic liquids bolster the conductivity of hybrid composite polymer electrolytes based on poly(ethylene glycols) and organic–inorganic silica nanoparticles formed in situ.

Cited by 84 publications

References 56 publications

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Ionic Liquid–Polymer Composites: A New Platform for Multifunctional Applications

Design of Polymer Blends Based on Chitosan:POZ with Improved Dielectric Constant for Application in Polymer Electrolytes and Flexible Electronics

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