Structural and electrochemical properties of micro-porous polymer blend electrolytes based on PVdF-co-HFP-PAN for Li-ion battery applications

Angaiah, Subramania; Sundaram, N.; Kumar, G. Vijaya

doi:10.1016/j.jpowsour.2004.12.009

Cited by 95 publications

(36 citation statements)

References 12 publications

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“…[17][18][19] The film starts decomposing at 2318C followed by an exothermic peak, which indicates that the film is stable up to 2318C. 20 The DTA trace shows an exothermic peak around 2608C, which corresponds to the melting point of PEMA polymer host.…”

Section: Conductivity Studiesmentioning

confidence: 99%

Li ion conduction behavior of hybrid polymer electrolytes based on PEMA

Rajendran

Prabhu

Rani

2008

J of Applied Polymer Sci

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Poly(vinyl chloride)/Poly(ethyl methacrylate) (PVC)/(PEMA)-based blend polymer electrolytes comprising a combination of PC (Propylene carbonate) as a plasticizer and LiClO 4 as a salt have been prepared by solvent casting technique with varying salt concentration ratios systematically. The prepared electrolytes were subjected to X-ray diffraction, Fourier transform infrared spectroscopy, conductivity studies, thermogravimetric/differential thermal analysis and Scanning electron microscopic studies. PVC/PEMA polymer blend electrolyte with 8 wt % of lithium salt exhibited ionic conductivity of the order of 10 À3 S/cm at room temperature.

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Section: Conductivity Studiesmentioning

confidence: 99%

Li ion conduction behavior of hybrid polymer electrolytes based on PEMA

Rajendran

Prabhu

Rani

2008

J of Applied Polymer Sci

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“…In porous PEs, the polymer host in the form of a membrane with pores of nanometer to micrometer size is employed to retain the liquid electrolyte [1,2]. The membrane should have the capability to absorb the liquid electrolyte without leakage, be chemically compatible with electrode materials and adhere well to the electrode.…”

Section: Introductionmentioning

confidence: 99%

Polymer electrolytes based on an electrospun poly(vinylidene fluoride-co-hexafluoropropylene) membrane for lithium batteries

Cheruvally

Kim

et al. 2007

Journal of Power Sources

166

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“…The most studied gel polymer electrolyte obtained by this process is the poly(vinylidene fluorideco-hexafluoropropylene) (PVdF-HFP) thermoplastic copolymer [15]. The advantage of choosing such a co-polymer, or PAN [16], and their related blends [17], is that they can be gelled by the liquid electrolyte to form in situ a microporous gel polymer electrolyte inside the batteries [18]. Nevertheless, the mechanical properties of such a physical cross-linking formed by the partial orientation of molecular chains are weak.…”

Section: Polymer Electrolytesmentioning

confidence: 99%

Electrolytes and Separators for Lithium Batteries

et al. 2016

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Rechargeable lithium batteries are basically of two types; lithium metal batteries, and, lithium-ion batteries. Lithium metal batteries (LMB) provide a higher theoretical energy density than the alternatives: their wide commercial availability is limited, however, by the tendency to grow dendrites during cycling. This is a potential hazard and also reduces cycle lifetime. Attempts are being made to suppress dendritic growth either by using solid electrolytes that act as mechanical barriers, or by choosing electrolytes that produce a suitable passivation layer called the solid-electrolyte interphase (SEI). Since there is no entirely successful strategy to inhibit the growth of dendrites, safety concerns have led to the use of the other kind of lithium battery, namely, the lithium-ion battery (LiB).Lithium-ion batteries are now widely employed for a variety of applications in electronic devices, mobile telephones, laptop computers and a large variety of other portable appliances. They possess a very high energy density, are light and compact and show excellent cyclability and reliability. The current commercial Li-ion batteries are based on aprotic organic liquids such as ethylene carbonate or dimethyl carbonate which have high dielectric constant and are thus good solvents for salts; they also show a large window of electrochemical stability. However, their vapor pressure is high, so that they can provoke fires and explosions in case of accidental battery shorts, when low-stability cathodes are used such as oxides. Such safety issues become accentuated in large lithium-ion batteries of interest in electric cars, especially if charge-discharge is carried out at high rates. The safety aspect has thus become a paramount issue in the development of this technology. Another component important for safety issue is the separator. This element must have, among other properties, a good wettability with the electrolyte, so that the choice of the separator is dependent on the choice of the electrolyte, one reason why we have chosen to include them in the same chapter.

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Structural and electrochemical properties of micro-porous polymer blend electrolytes based on PVdF-co-HFP-PAN for Li-ion battery applications

Cited by 95 publications

References 12 publications

Li ion conduction behavior of hybrid polymer electrolytes based on PEMA

Li ion conduction behavior of hybrid polymer electrolytes based on PEMA

Polymer electrolytes based on an electrospun poly(vinylidene fluoride-co-hexafluoropropylene) membrane for lithium batteries

Electrolytes and Separators for Lithium Batteries

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