Effects of MnO2 nano-particles on the conductivity of PMMA-PEO-LiClO4-EC polymer electrolytes

Tan, Say Min; Johan, Mohd Rafie

doi:10.1007/s11581-011-0541-7

Cited by 32 publications

(14 citation statements)

References 19 publications

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“…The blending of a small amount of PEO in PMMA matrix results in the increase of PMMA flexibility and reduces its brittleness, whereas the PMMA environment increases the amorphous phase of semi‐crystalline PEO. These tailored physico‐chemical properties recognized the PEO–PMMA blend based nanodielectrics as a new novel material for the preparation of SPEs …”

Section: Introductionmentioning

confidence: 99%

“…These tailored physicochemical properties recognized the PEO-PMMA blend based nanodielectrics as a new novel material for the preparation of SPEs. [18][19][20][21][22] The knowledge of the dielectric properties and molecular relaxation mechanism in a nanocomposite material is a necessity for its successful applications. Our survey of literature reveals that the dielectric properties and the relaxation phenomena in a nanocomposite material consisted of PEO-PMMA blend with montmorillonite (MMT) clay as nanofiller is still unexplored.…”

Section: Introductionmentioning

confidence: 99%

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Dielectric Dispersion and Relaxation in Polymer Blend Based Nanodielectric Film

Sengwa

Choudhary

2016

Macromolecular Symposia

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Summary: Polymer nanodielectrics is the exponential growing field of advanced materials sciences. Such flexible materials have recognized their suitability as substrate and insulator in fabrication of microelectronic devices, and also in preparation of ion conducting solid polymer electrolytes. The nanodielectric film consisted of poly(ethylene oxide) and poly(methyl methacrylate) (PEO-PMMA; 75/ 25 wt/wt%) blend with 5 wt% montmorillonite (MMT) clay as nanofiller has been prepared by solution-casting method followed by melt-pressed technique. The X-ray diffraction study of the film confirms the intercalated MMT structures in the semicrystalline phase of PEO-PMMA blend. The scanning electron microscopic images confirm the significant variation in morphology of the PEO-PMMA blend on addition of MMT nanofiller. The dielectric relaxation spectroscopy has been employed for measurement of complex dielectric function, ac electrical conductivity and electric modulus spectra of the nanodielectric film in the frequency range 20 Hz-1 MHz. The value of real part of dielectric function of the film is found high at low frequencies due to contribution of electrode polarization effect, but it decreases non-linearly with the increase of frequency and finally approaches the high frequency limiting value of 2.3 at 1 MHz. The relaxation peak in dielectric loss spectra corresponding to polymer segmental motion is found above 10 kHz, and the peak positions have a shift towards higher frequency side with the increase of temperature. The dc conductivity increases and the relaxation time of the polymer segmental motion decreases with increasing temperature of the nanodielectric film according to the Arrhenius behaviour.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dielectric Dispersion and Relaxation in Polymer Blend Based Nanodielectric Film

Sengwa

Choudhary

2016

Macromolecular Symposia

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“…However, SPE possesses lower ionic conductivity at ambient temperature. To overcome the poor ionic conductivity various approaches are manifested to develop new materials such as polymer blending, nanofiller dispersion, incorporation of ionic liquids/plasticizer [5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Arya¹

2018

Preprint

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Abstract:Herein, we present preparation of solid polymer electrolyte (SPE) comprising of PEO, NaPF6 and varying fraction of Succinonitrile (SN) by standard solution cast technique. The morphological features and structural properties were studied by the FESEM, XRD, respectively. FTIR was performed to study the interactions between polymer host, salt, and SN. Impedance spectroscopy, Transference number measurements, LSV and CV were used to examine the electrochemical properties. The complex permittivity/conductivity & modulus were studied to understand the dielectric properties by evaluating the dielectric strength, relaxation time, hopping frequency and dc conductivity. Based on the experimental results an interaction mechanism is presented.

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“…In the last one decade, the solid polymeric electrolytes (SPEs) have been a topic of great technological interests because of their uses in the high power and high energy density storage lithium‐ion batteries . These batteries are the promising power sources for the modern portable electronic equipments and the electrical vehicles.…”

Section: Introductionmentioning

confidence: 99%

“…The main characteristics of the SPEs are their light weight, leak proof, flexible and compact in size and longer life span with improved safety and electrochromical performances, which make them superior over the liquid and ceramic electrolytes. Poly(ethylene oxide) (PEO) and poly(methyl methacrylate) (PMMA) are better considerations among the polymers host for preparation of the SPE materials. Owing to the environmental friendly, high solvating power in the solid state for alkali metal salts and highly flexible type film forming ability of the PEO, it has become the first choice of the investigators for preparation of SPEs both by the solution–cast as well as melt compounding methods.…”

Section: Introductionmentioning

confidence: 99%

Structural and dielectric studies of amorphous and semicrystalline polymers blend‐based nanocomposite electrolytes

Choudhary

Sengwa

2014

J of Applied Polymer Sci

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The solid polymeric nanocomposite electrolyte (SPNE) films based on the blend of amorphous poly(methyl methacrylate) (PMMA) and semicrystalline poly(ethylene oxide) (PEO) (PMMA:PEO 5 80:20 wt %) doped with lithium perchlorate (LiClO 4 ) salt and montmorillonite (MMT) clay nanofiller were prepared by classical solution cast, ultrasonic assisted solution cast and ultrasonication along with microwave irradiated solution cast followed by melt-pressing methods. The X-ray diffraction study of these electrolytes revealed the amorphous behavior with intercalated MMT structures. The suppressed crystallinity of PEO in the blend electrolyte complexes confirmed the existence of single discrete PEO chains confined within the PMMA domains. The dielectric relaxation spectroscopy of these materials was performed over the frequency range 20 Hz to 1 MHz, at ambient temperature. The presence of a singular relaxation peak in the loss tangent and electric modulus spectra of these electrolytes confirms a coupled cooperative chain segmental dynamics of the blend polymer owing to their miscible amorphous morphology. The behavior of transient complexes formed between the polymers functional groups, lithium cations and the intercalated MMT nanoplatelets was explored. The ambient temperature ionic conductivity of these electrolytes depends on the structural dynamics and the sample preparation methods. It is revealed that the presence of PEO in the PMMA matrix mainly governs the structural, dielectric, and ionic properties of these SPNE films.

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Effects of MnO2 nano-particles on the conductivity of PMMA-PEO-LiClO4-EC polymer electrolytes

Cited by 32 publications

References 19 publications

Dielectric Dispersion and Relaxation in Polymer Blend Based Nanodielectric Film

Dielectric Dispersion and Relaxation in Polymer Blend Based Nanodielectric Film

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

Structural and dielectric studies of amorphous and semicrystalline polymers blend‐based nanocomposite electrolytes

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