Ionic conductivity studies in composite solid polymer electrolytes based on methylmethacrylate

Rajendran, S.; Mahendran, O; Kannan, R.

doi:10.1016/s0022-3697(01)00144-5

Cited by 88 publications

(47 citation statements)

References 16 publications

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“…Figure 8 . 26 By comparing the solvent mixture treated PMMA with virgin PMMA, it can be found that the transmittance intensity of the solvent mixture treated specimen is reduced and no new intense peak is observed, except the one at 60°C and concentration 8 g/100 g of FeCl 3 ⅐ 6H 2 O, which has an obvious extra absorption peak at 1405.06 cm Ϫ1 . The PMMA with or without nano iron carbonate particulates had the same peak with no difference except the lower intensity for PMMA with nano iron carbonate as shown in Figure 8 (b).…”

Section: Infrared Spectrum Analysismentioning

confidence: 92%

Preparation and properties of poly(methyl methacrylate)/iron carbonate_(p) nanocomposites

Chou¹,

Lin²,

Yeh³

2005

J of Applied Polymer Sci

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ABSTRACT:The mass transport of methanol mixed with ferric chloride hexahydrate (FeCl 3 ⅐ 6H 2 O) in poly(methyl methacrylate) and poly(methyl methacrylate)/iron carbonate particulate (p) nanocomposites is prepared by chemical vapor crystallization and the resulting materials, which are subjected to characterization to evaluate thermal and optical properties, have been investigated. Mass transport is an anomalous and endothermic process and satisfies the van't Hoff plot. We have prepared successfully poly(methyl methacrylate)(PMMA)/iron carbonate particulates nanocomposites using CO 2 gas slowly diffused into saturated solvent mixture-treated poly(methyl methacrylate) for 48 h. After SEM observation, approximately 80 nm iron carbonate particulates were precipitated and evenly distributed in the poly(methyl methacrylate) matrix. In comparison with solvent mixture-treated PMMA, the cut-off wavelength of transmittance in nanocomposites shifts to the shorter wavelength side (red shift). The presence of nanoscale iron carbonate particulates increased the glass transition temperature of the nanocomposites as determined by differential scanning calorimeter, and the glass transition temperature increased with increasing content of nanoscale iron carbonate particulates. The FTIR spectra of solvent mixture-treated poly(methyl methacrylate) and nanocomposites are also studied.

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Section: Infrared Spectrum Analysismentioning

confidence: 92%

Preparation and properties of poly(methyl methacrylate)/iron carbonate_(p) nanocomposites

Chou¹,

Lin²,

Yeh³

2005

J of Applied Polymer Sci

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“…The enhancement of ionic conductivity would be expected due to CeO 2 which interacts with either or both the anion and cation thereby reducing the ion pairing and increases the number of charge carriers [30]. The addition of filler concentration diminish the conductivity, which implies that increased the dilution effect predominate and the conductivity decreases continuously [36].…”

Section: Electrochemical Studiesmentioning

confidence: 99%

“…Moreover, effect of inorganic oxides such as ZrO 2 nanofiller [22], SiO 2 [23,24], MgO [25], Al 2 O 3 [26] and TiO 2 [27][28][29] on the electrochemical properties of P(VdF-co-HFP) based porous structure polymer electrolytes have been studied. Recently, Rajendran et al [30] reported a solid polymer electrolyte, with the addition of microscale CeO 2 filler in PMMA polymer matrix. Uvarov et al has studied the effect of adding some rare earth oxide ceramics such as CeO 2 , SiO 2 , fly ash, and Eu 2 O 3 as dispersoids, and verified the fact that other than γ-Al 2 O 3 , the above mentioned dispersoids also help in achieving the modest enhancement in electrochemical properties include the ionic conductivity and bulk properties of the composite solid electrolytes [31].…”

Section: Introductionmentioning

confidence: 99%

A New Class of P(VdF-HFP)-CeO2-LiClO4-Based Composite Microporous Membrane Electrolytes for Li-Ion Batteries

Vijayakumar

Karthick

Angaiah

2011

International Journal of Electrochemistry

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Composite microporous membranes based on Poly (vinylidene fluoride-co-hexafluoro propylene) P(VdF-co-HFP)-CeO 2 were prepared by phase inversion and preferential polymer dissolution process. It was then immersed in 1M LiClO 4 -EC/DMC (v/v = 1 : 1) electrolyte solution to obtain their corresponding composite microporous membrane electrolytes. For comparison, composite membrane electrolytes were also prepared by conventional phase inversion method. The surface morphology of composite membranes obtained by both methods was examined by FE-SEM analysis, and their thermal behaviour was investigated by DSC analysis. It was observed that the preferential polymer dissolution composite membrane electrolytes (PDCMEs) had better properties, such as higher porosity, electrolyte uptake (216 wt%), ionic conductivity (3.84 mS·cm −1 ) and good electrochemical stability (4.9 V), than the phase inversion composite membrane electrolytes (PICMEs). As a result, a cell fabricated with PDCME in between mesocarbon microbead (MCMB) anode and LiCoO 2 cathode had better cycling performance than a cell fabricated with PICME.

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“…Tarascon et al [9,10] suggested a self-standing battery stack supported by gel polymer electrolytes polyvinylidene fluoride (PVDF), poly(vinylidene fluoride co-hexafluoropropene) (PVDF-HFP) as an electrolyte material and was activated by filling the cell with a liquid electrolyte. To improve the ionic conductivities, mechanical and thermal stability of the self-standing battery stack, self-standing polymer electrolyte containing ceramic fillers such as nano-scale SiO 2 and Al 2 O 3 was proposed [11][12][13][14]. Prosini et al [15] prepared self-standing integrative lithium-ion cells using an intrinsically porous separator made of a PVDF-HFP matrix with Al 2 O 3 as the filler.…”

Section: Introductionmentioning

confidence: 99%

Self-standing integrative cell with an inorganic separator for lithium-ion battery stacks

et al. 2012

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An integrative cell with a porous Al 2 O 3 membrane as both a support and a separator has been fabricated. LiFePO 4 and graphite were coated onto the both sides of the rigid porous Al 2 O 3 separator, while an electrolyte was infiltrated inside. The LiFePO 4 /graphite integrative cells were evaluated in coin-type cells and exhibited good cycle capacity. The self-standing integrative cell was a simple and promising technology to assemble the battery stacks and meanwhile had an obvious advantage of forming a firm structure, which could avoid inner short circuit during being moved or crashed.

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Ionic conductivity studies in composite solid polymer electrolytes based on methylmethacrylate

Cited by 88 publications

References 16 publications

Preparation and properties of poly(methyl methacrylate)/iron carbonate_(p) nanocomposites

Preparation and properties of poly(methyl methacrylate)/iron carbonate_(p) nanocomposites

A New Class of P(VdF-HFP)-CeO2-LiClO4-Based Composite Microporous Membrane Electrolytes for Li-Ion Batteries

Self-standing integrative cell with an inorganic separator for lithium-ion battery stacks

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Ionic conductivity studies in composite solid polymer electrolytes based on methylmethacrylate

Cited by 88 publications

References 16 publications

Preparation and properties of poly(methyl methacrylate)/iron carbonate(p) nanocomposites

Preparation and properties of poly(methyl methacrylate)/iron carbonate(p) nanocomposites

A New Class of P(VdF-HFP)-CeO2-LiClO4-Based Composite Microporous Membrane Electrolytes for Li-Ion Batteries

Self-standing integrative cell with an inorganic separator for lithium-ion battery stacks

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Preparation and properties of poly(methyl methacrylate)/iron carbonate_(p) nanocomposites

Preparation and properties of poly(methyl methacrylate)/iron carbonate_(p) nanocomposites