Preparation and characterization of poly(vinyl sulfone)- and poly(vinylidene fluoride)-based electrolytes

Choe, H.S.; Giaccai, Jennifer A.; Alamgir, M.; Abraham, K. M.

doi:10.1016/0013-4686(95)00180-m

Cited by 178 publications

(77 citation statements)

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“…All above-said properties of GPE cannot be achieved by using a single polymer as various problems arise, such as poor mechanical strength, compatibility towards lithium metal anode, and poor interfacial properties. 11 Hence, in the present study, the technique of blending two polymers PVDF-HFP and PMMA is used to improve the properties of the polymer matrix. As a polymer host, PVDF-HFP has received a lot of attention due to its excellent properties such as low degree of crystallinity 12 and high dielectric constant " % 8.4 13 that help in higher dissociation of lithium salt.…”

Section: Introductionmentioning

confidence: 99%

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO₄salt

Gohel

Kanchan

2018

J. Adv. Dielect.

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Poly(vinylidene fluoride-hexafluropropylene) (PVDF-HFP) and poly(methyl methacrylate) (PMMA)-based gel polymer electrolytes (GPEs) comprising propylene carbonate and diethyl carbonate mixed plasticizer with variation of lithium perchlorate (LiClO 4 ) salt concentrations have been prepared using a solvent casting technique. Structural characterization has been carried out using XRD wherein diffraction pattern reveals the amorphous nature of sample up to 7.5 wt.% salt and complexation of polymers and salt have been studied by FTIR analysis. Surface morphology of the samples has been studied using scanning electron microscope. Electrochemical impedance spectroscopy in the temperature range 303-363 K has been carried out for electrical conductivity. The maximum room temperature conductivity of 2.83Â10 À4 S cm À1 has been observed for the GPE incorporating 7.5 wt.% LiClO 4 . The temperature dependence of ionic conductivity obeys the Arrhenius relation. The increase in ionic conductivity with change in temperatures and salt content is observed. Transport number measurement is carried out by Wagner's DC polarization method. Loss tangent (tan ) and imaginary part of modulus (M 00 ) corresponding to dielectric relaxation and conductivity relaxation respectively show faster relaxation process with increasing salt content up to optimum value of 7.5 wt.% LiClO 4 . The modulus (M 00 ) shows that the conductivity relaxation is of non-Debye type (broader than Debye peak).

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Section: Introductionmentioning

confidence: 99%

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO₄salt

Gohel

Kanchan

2018

J. Adv. Dielect.

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“…However, a decrease of ionic conductivity was observed due to higher viscosity and lower dissociability of lithium salt. Recently poly(vinylidenefluoride) (PVdF) as a host has drawn the attention of many researchers due to its high anodic stability and high dielectric constant (ε = 8.4) which helps in greater ionization of lithium salts (Choe et al, 1995). Unfortunately, PVdF-based polymer electrolytes suffer due to syneresis; a phenomenon by which the liquid component separates out from the host matrix in due course or upon application of pressure leading to battery leak and related safety problems.…”

Section: Types Of Polymer Electrolytesmentioning

confidence: 99%

Nanofiber Reinforced Composite Polymer Electrolyte Membranes

Kumar¹,

Deka²

2010

Nanofibers

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“…It has high anodic stability due to strong electron withdrawing functional group and has a high dielectric constant (ε = 8.4) which helps in a greater ionization of lithium salts [21] . Unfortunately, PVdF-based polymer electrolytes suffer due to syneresis; a phenomenon by which the liquid component separates out from the host matrix in due course or upon application of pressure which leads to battery leak and related safety problems.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical studies on inert filler incorporated poly (vinylidene fluoride - hexafluoropropylene) (PVDF - HFP) composite electrolytes

2006

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The ionic conductivity, thermal stability and lithium transference number have been investigated in composite polymer electrolytes (CPE) of poly(vinylidene fluoride -hexafluoropropylene) (PVDF-HFP) incorporating nano fillers of AlO[OH] n or γ-Al 2 O 3 , with LiClO 4 as salt. The compatibility of the composite polymer electrolyte with lithium metal anode has also been studied. The effect of particle size on the compatibility of Li/ CPE/ Li symmetric cells has also been analyzed.

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Preparation and characterization of poly(vinyl sulfone)- and poly(vinylidene fluoride)-based electrolytes

Cited by 178 publications

References 1 publication

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO₄salt

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO₄salt

Nanofiber Reinforced Composite Polymer Electrolyte Membranes

Electrochemical studies on inert filler incorporated poly (vinylidene fluoride - hexafluoropropylene) (PVDF - HFP) composite electrolytes

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Preparation and characterization of poly(vinyl sulfone)- and poly(vinylidene fluoride)-based electrolytes

Cited by 178 publications

References 1 publication

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO4salt

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO4salt

Nanofiber Reinforced Composite Polymer Electrolyte Membranes

Electrochemical studies on inert filler incorporated poly (vinylidene fluoride - hexafluoropropylene) (PVDF - HFP) composite electrolytes

Contact Info

Product

Resources

About

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO₄salt

Ionic conductivity and relaxation studies in PVDF-HFP:PMMA-based gel polymer blend electrolyte with LiClO₄salt