Study on ionic transport mechanism and interactions between salt and polymer chain in PAN based solid polymer electrolytes containing LiCF3SO3

Yoon, Hae-Kwon; Chung, Wonsub; Jo, Nam‐Ju

doi:10.1016/j.electacta.2004.01.095

Cited by 90 publications

(28 citation statements)

References 12 publications

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“…Abraham et al [15] have prepared PAN polymer electrolyte films with EC and PC as plasticizers containing LiPF 6 /AsF 6 /LiN(SO 2 CF 3 ) 2 and they obtained the conductivity value in order of 10 −4 -10 −3 S cm −1 at room temperature. These results are in good agreement with the works that are described and reported by other researchers [16][17][18]. Generally, ionic conductivity of polymer electrolytes depends on the charge carrier concentration, n and carrier mobility, μ as described by relation σ = nqμ, where q representing the charge of mobile carrier.…”

Section: Resultssupporting

confidence: 94%

A comparative study of lithium and sodium salts in PAN-based ion conducting polymer electrolytes

Osman

Isa

Ahmad

et al. 2010

Ionics

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The conducting polymer electrolyte films consisting of polyacrylonitrile (PAN) as the host polymer, lithium triflate (LiCF 3 SO 3 ) and sodium triflate (NaCF 3 SO 3 ) as inorganic salts were prepared by the solution-cast technique. The pure PAN film was prepared as a reference. The ionic conductivity for the films is characterized using impedance spectroscopy. The room temperature conductivity for the PAN+26 wt.% LiCF 3 SO 3 film and the PAN+24 wt.% NaCF 3 SO 3 film is 3.04×10 −4 S cm −1 and 7.13×10 −4 S cm −1 , respectively. XRD studies show that the complexation that has occurred in the PAN containing salt films and complexes formed are amorphous. The FTIR spectra results confirmed the complexation has taken place between the salt and the polymer. These results correspond with surface morphology images obtained from SEM analysis. The conductivitytemperature dependence of the highest conducting film from PAN + LiCF 3 SO 3 and PAN + NaCF 3 SO 3 systems follows Arrhenius equation in the temperature range of 303 to 353 K. The PAN containing 24 wt.% LiCF 3 SO 3 film has a higher ionic conductivity and lower activation energy compared to the PAN containing 26 wt.% LiCF 3 SO 3 film. These results can be explained based on the Lewis acidity of the alkali ions, i.e., the interaction between Li + ion and the nitrogen atom of PAN is stronger than that of Na + ion.

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Section: Resultssupporting

confidence: 94%

A comparative study of lithium and sodium salts in PAN-based ion conducting polymer electrolytes

Osman

Isa

Ahmad

et al. 2010

Ionics

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“…So, films fabricated using polar polymers such as PAN or poly(methyl methacrylate) exhibited relatively higher ionic conductivity. [8][9][10] For our system, styrene and BA used cannot dissolve lithium salts because of their nonpolarity, whereas AN and MMA can dissolve a lot of lithium without a solvent. So it could be expected based on conventional results that SPE films fabricated using UAN/AN and UAN/MMA would show higher ionic conductivity than the SPE films prepared using UAN/styrene and UAN/BA.…”

Section: Measurementsmentioning

confidence: 99%

“…In most cases, polar polymers or polar solvents, which can dissolve lithium salts, are generally used for fabrication of conventional SPE films to obtain acceptable high ionic conductivity. [5][6][7][8][9][10][29][30][31] Especially, for solvent-free SPE films, host polymers should be able to dissolve lithium salts. So, films fabricated using polar polymers such as PAN or poly(methyl methacrylate) exhibited relatively higher ionic conductivity.…”

Section: Measurementsmentioning

confidence: 99%

“…[5][6][7] There have been several approaches to solve low ambient conductivities of solvent-free SPEs in ambient temperature. SPE systems based on poly(vinyl alcohol) 8 , polysiloxanes, 9 polyacrylonitrile (PAN) 10 have been fabricated for this purpose. Also, specially designed polymers, such as amphiphilic polytetrahydrofuran copolymers, poly(ethyleneoxide)-based borates, highly porous poly(vinylidene fluoride), and poly(ethylene oxide-co-ethylene carbonate) have been used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of microphase‐separated solvent‐free solid polymer electrolyte nanocomposite films using amphiphilic urethane acrylate precursors

Kim

Han

Suh

et al. 2007

J of Applied Polymer Sci

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A new solvent-free solid polymer electrolyte (SPE) films could be fabricated through bulk copolymerization process of amphiphilic urethane acrylate nonionomer (UAN). Amphiphilic UAN chain having polypropylene oxide-based hydrophobic segment and polyethylene oxidebased hydrophilic segment can not only dissolve lithium salt by complex formation with lithium cations but also be copolymerized with various monomers to form microphaseseparated polymeric matrix. Unlike conventional SPE systems showing higher conductivity with polar polymers and polar solvents, our SPE films prepared by copolymerization of UAN and hydrophobic monomers exhibited relatively higher conductivity. Dissolving lithium salts in UAN/hydrophobic monomer mixtures caused hydrophilic/hydrophobic microphase separation, which was more favorable for ionic conduction of lithium ions, resulting in the higher ionic conductivity than the SPE films fabricated using UAN/hydrophobic monomer mixture. This microphase-separated structure of SPE films could be also confirmed by transmission electron microscope (TEM) images. Ionic conductivity of our SPE films could be also improved by dispersing clay minerals within SPE films. Three types of clay having different surface properties were used to fabricate clay/SPE nanocomposite films. Ionic conductivity of nanocomposite films depended on dispersibliity of clay nanoparticles with a SPE film, which was confirmed by measuring X-ray diffraction and TEM.

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“…[12][13][14] The Gel Polymeric Electrolytes have a unique hybrid structure, which possesses cohesive properties of solids and diffusive properties of liquids simultaneously 15 .Ethylene carbonate (EC) is a familiar candidate for plasticizer in the gel polymer electrolytes because of its high dielectric constant (95.3) and other attractive properties 16 . The effect of plasticizer in the polymer electrolyte system is to decrease the glass transition temperature and making the polymer become more amorphous and then allowing the ionic carriers to travel freely inside the electrolyte consequently as to raise the ionic conductivity of the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Ac Conductivity and Thermal Studies of Pan-Nafdoped Gel Polymer Electrolytes for Solid State Battery Applications

2017

Rasayan J Chem

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Thin film membranes of poly acrylonitrile (PAN) doped with sodium Fluoride (NaF) was prepared by solution casting technique. The Gel polymer Electrolyte films exhibiting an average thickness of 142 µm. The films were prepared with different (wt %) ratios. The structural formations were analyzed by X-Ray Diffraction method (XRD).The Conductivity Studies (AC) and thermal conductivity studies (DSC) of the different ratios of gel polymer electrolyte composites were studied. The AC conductivity studies were determined from the impedance data and thermal conductivity studies were measured using the transient electric pulse method. The AC Conductivity increases with increasing temperature and NaF Concentration. The formed fluoride complexes also contribute in increasing the AC quantities. The DSC measurements showed a decrease in the degree of crystallinity and increase of amorphous regions with increasing concentration of salt NaF. The sample containing 70PAN:30NaF exhibited the maximum conductivity of 1.82x10 -4 S cm -1 at room temperature (303K) and 2.96x10 -3 S cm -1 at 373K.

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Study on ionic transport mechanism and interactions between salt and polymer chain in PAN based solid polymer electrolytes containing LiCF3SO3

Cited by 90 publications

References 12 publications

A comparative study of lithium and sodium salts in PAN-based ion conducting polymer electrolytes

A comparative study of lithium and sodium salts in PAN-based ion conducting polymer electrolytes

Synthesis of microphase‐separated solvent‐free solid polymer electrolyte nanocomposite films using amphiphilic urethane acrylate precursors

Ac Conductivity and Thermal Studies of Pan-Nafdoped Gel Polymer Electrolytes for Solid State Battery Applications

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