Enhancement in electrical and stability properties of amorphous polymer based nanocomposite electrolyte

Shukla, Namrata; Thakur, Awalendra K.

doi:10.1016/j.jnoncrysol.2011.06.036

Cited by 19 publications

(8 citation statements)

References 35 publications

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“…The highest ionic conductivity was 2.3×10 -5 S cm -1 for erbium oxide nanofiller and almost five order greater than pure polymer blend and corresponds to the complete dissociation of salt in evidenced by the FTIR spectra. Besides with addition of TiO2 nanofiller conductivity decreases which is consistent with the reduction of dissociated free ions calculated by deconvolution of FTIR spectra and also the agglomeration of particles restrict the ion migration as noticed in the in FESEM micrograph [57]. The typical conductivity variation with different nanofiller agrees well with the filler dependent changes in the fraction of the free anion in the PSPEs system.…”

Section: Electrical Conductivitysupporting

confidence: 84%

Effect of variation of different nanofillers on structural, electrical, dielectric, and transport properties of blend polymer nanocomposites

Arya

Sadiq

Sharma

2017

Ionics

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In the present work, the effect of different nanofiller (BaTiO3, CeO2, Er2O3 or TiO2) on blend solid polymer electrolyte comprising of PEO and PVC complexed with bulky LiPF6 have been explored. The XRD analysis confirms the polymer nanocomposite formation. FTIR provides evidence of interaction among the functional groups of the polymer with the ions and the nanofiller in terms of shifting and changing peak profile. The highest ionic conductivity is ~2.3×10 -5 S cm -1 with a wide electrochemical stability window of ~3.5 V for 10 wt. % Er2O3. The real and imaginary part of dielectric permittivity follows the identical trend of the decreasing value with increase in the frequency. The particle size and the dielectric constant shows an abnormal trend with different nanofiller. The ac conductivity follows the universal power law. An effective mechanism has been proposed to understand the nanofiller interaction with cation coordinated polymer in the investigated system. storage/conversion devices must have (a) high ionic conductivity; (b) electrochemical stability window (>4 V); (c) low melting point; (d) high boiling point; (e) high chemical stability; (f) nontoxicity; (g) low cost and good compatibility with electrodes. Solid polymer electrolyte (SPEs) plays a dual role as an electrolyte as well as a separator which keeps both electrodes separate and avoids the user from using a spacer as in liquid electrolyte system. The first report on ionic conduction was given by P. V. Wright [5] and Fenton et al [6] in 1973 and it was concluded that polymer host dissolved with an alkali metal salt results in an ionic conductive system. The first application of novel polymer electrolyte in batteries was announced by Armand and his co-workers in 1978 [7]. Most devices are based on liquid/gel polymer electrolytes due to their high ionic conductivity (10 -3 -10 -2 Scm -1 ) and compatible with electrodes. But poor mechanical strength, freezing at low temperature, leakage and flammable nature limits their application in commercial use. This motivates the researchers toward better replacement of liquid polymer electrolyte with a solvent free polymer electrolyte having high ionic conductivity, leak proof, flexibility, wide electrochemical window, good mechanical strength, light weight and ease of preparation [8-10]. Solid polymer electrolytes (SPEs) fulfill all above requirements and have attracted researchers globally towards development for their potential application in portable electronics and electrochemical devices [11]. The commonly used host polymer for preparation of polymer nanocomposite films (PNCs) is PEO [12], PAN [13], PMMA [14], PEMA [15] and PVC [16]. Out of aforesaid host polymers, polyethylene oxide (PEO) is undoubtedly the best host polymer used as SPEs with strong, unstrained C-O, C-C, C-H bonds and it has high dielectric constant, easy availability, and high ionic conductivity in amorphous phase, low glass transition temperature, high flexibility, and good dimensional and chemical stability. But PEO possesses low ion...

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Section: Electrical Conductivitysupporting

confidence: 84%

Effect of variation of different nanofillers on structural, electrical, dielectric, and transport properties of blend polymer nanocomposites

Arya

Sadiq

Sharma

2017

Ionics

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“…Substantial improvements in voltage stability were also reported [124] in CeO 2 /PMMA CPE and improved performance at higher voltage operating condition with AlPO 4 /PEG [114] and siloxane/PE [117] composites. Further, higher overall properties of the ZrO 2 /PEI CPE than that of the commercial CG2400 Celgard membrane were also reported [133].…”

Section: Super Acid Oxidesmentioning

confidence: 71%

Polymer composites and blends for battery separators: State of the art, challenges and future trends

Nunes-Pereira

Costa

Lanceros‐Méndez

2015

Journal of Power Sources

233

145

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“…For both the films, the permittivity shows a low‐frequency dispersion followed by high‐frequency saturation. The low‐frequency region behavior is the result of space charge polarization at the electrode–electrolyte interface . The high‐frequency saturation may be related to the combined effect of dipolar and ionic polarization arising due to ion pairs in the SPE films.…”

Section: Dielectric Studymentioning

confidence: 99%

Dielectric Modulus and Conductivity Scaling Approach to the Analysis of Ion Transport in Solid Polymer Electrolytes

Tripathi

Shukla

Thakur

et al. 2019

Polymer Engineering & Sci

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Solid polymer electrolyte films (SPEs) based on poly(methyl methacrylate) are prepared using a solution cast technique. The temperature-dependent behavior of dielectric, modulus spectra and ac conductivity has been investigated. The long tail of the real part of modulus (M 0 ) in the low frequency indicates the capacitive nature of the samples. The frequency dependence of imaginary part of modulus (M 00 ) shows a non-Debye relaxation that has been explained using the Kohlrausch-Williams-Watts stretched exponential function. The activation energy for the relaxation is almost same as the activation energy for the conduction. The relaxation time obtained from the tangent loss graph (τ δ ) is about two orders of magnitude larger than that obtained from the imaginary part of modulus graph (τ m ). The ac conductivity has been found to obey Jonscher's universal power law. Transport parameters show that addition of filler creates additional hopping sites for the charge carriers and also increases the charge carrier density. It is also observed that the higher ionic conductivity at higher temperature is due to increased thermally activated hopping rates accompanied by a significant increase in carrier concentration. The contribution of carrier concentration to the total conductivity is also confirmed from Summerfield scaling. POLYM. ENG. SCI., 60:297-305, 2020.

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Enhancement in electrical and stability properties of amorphous polymer based nanocomposite electrolyte

Cited by 19 publications

References 35 publications

Effect of variation of different nanofillers on structural, electrical, dielectric, and transport properties of blend polymer nanocomposites

Effect of variation of different nanofillers on structural, electrical, dielectric, and transport properties of blend polymer nanocomposites

Polymer composites and blends for battery separators: State of the art, challenges and future trends

Dielectric Modulus and Conductivity Scaling Approach to the Analysis of Ion Transport in Solid Polymer Electrolytes

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