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Abstract-Growth of solid polymer electrolytes is driven by their tremendous technological applications. Therefore, solid-state polymer electrolyte have been prepared by solutioncasting method by using poly (ethylene oxide) (PEO), KClO 4 salt and Nano filler Al 2 O 3 . The complexation of poly (ethylene oxide) (PEO), KClO4and Al2O3 have been studied by using X-ray diffraction (XRD), IR and differential scanning calorimetry (DSC). Solid state electrochemical carbon monoxide gas sensors have been fabricated by using polymer electrolytes (PEO+ KClO4) and (PEO+ KClO 4 +Nano filler Al 2 O 3 ) and studied their sensitivities at different temperatures, and at different carbon monoxide gas concentrations. From these studies it is concluded that nano filler added polymer electrolytes sensor have more sensitivity when compared to the polymer electrolytes without nano filler.Index Terms-Polymer, poly (ethylene oxide), x-ray diffraction, gas sensor. I. INTRODUCTIONOver the last few decades, a considerable amount of research work has been reported on solid polymer electrolytes due to the technological advantages, such as long self-life, extreme miniaturization, wide temperature range of operation and they can be prepared easily with low cost. These solids exhibit appreciable high ionic conductivities at their operating temperatures [1]- [5]. Polymer electrolytes can be shaped in the form of thin film, there by reducing the internal resistance leading to gas sensing material application. A few of reports are materialized on proton conducting polymer electrolytes and their application to gas sensors. No attempts were witnessed for the preparation of sensors using ionic conductors. Keeping these aspects in view, the authors are used (PEO+ KClO 4 ) and (PEO+ KClO 4 +Nano filler Al 2 O 3 ) based polymer electrolytes which were fabricated by using solution casting technique. Complexation of the PEO and KClO 4 was confirmed by using X-ray diffraction (XRD), IR and differential scanning calorimetry (DSC). (PEO+ KClO 4 ) and (PEO+ KClO 4 +Nano filler Al 2 O 3 ) based polymer electrolyte carbon monoxide gas sensors were fabricated and studied their characteristics at different temperatures and also at different concentrations of carbon monoxide gas. Manuscript received November 8, 2013; revised January 18, 2014. T. Sreekanth is with JNTUH College of Engineering, Nachupally (Kondagattu), Karimnagar Dist., Andhra Pradesh, India (e-mail: srikanth2t@gmail.com).V. Madhusudhana Reddy is with Malla Reddy College of Engineering and Techonology, Dhullapally, Hyderabad, Andhra Pradesh, India (e-mail: v.madhusudhanareddy@gmail.com). II. EXPERIMENTALIon conducting polymer electrolyte films (thickness  100-150 µm) of PEO [Aldrich, molecular weight (4 × 10 5 )] complexed with KClO 4 salt have been prepared in the weight ratios (90:10), (80:20) and (70:30) by solution-casting technique using methanol and water as solvents. Nano alumina (Al 2 O 3 ) having particle size ~10nm, has been used as filler for these polymer electrolytes. The solutions were...

PVDF polymer, LiClO4 salt doped PVDF polymer electrolyte, PVDF/PEG polymer blend and LiClO4 salt doped PVDF/PEG polymer blend electrolyte thin films prepared via solution cast method further these prepared thin films undergone with different characterization techniques i.e. XRD, FTIR, SEM and DSC. XRD and SEM results confirmed that reduction in crystalline nature of PVDF polymer in the presence of PEG polymer and LiClO4 salt. FTIR spectra results revealed that complexation/interaction of LiClO4 salt with polymers. Shifting of glass transition temperature (Tg) and disappearance of melting temperature(Tm) on the DSC curves of PEG and LiClO4 salt doped thin films was observed, which indicated that thermal stability and reduction in crystalline nature of thin films. These results confirmed that LiClO4 salt doped PVDF/PEG thin films may offer higher ionic conductivity for the fabrication of electrochemical cell.

New poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP)/ZrO2-based nanocomposite porous polymer membranes were prepared with doping of magnesium ions using THF as solvent. These membranes were prepared using the solvent casting technique. The optimal nanofiller (0, 2, 4, 6, 8 and 10% Zr nanopowder) was incorporated into the PVDF-co-HFP/MgTf3/ZrO2 and the incorporation of the nanofiller results in an increase in the porosity of the prepared membranes. The structural, morphological and thermal properties of the nanocomposite porous polymer membranes were also investigated. The structural investigation and the identification of functional groups were accomplished using FTIR technique. X-ray diffraction (XRD) analysis was performed to ascertain the phase of polymer membranes and the phase change that happens upon interaction with nanofiller and Mg2+ ions. Assessment of the nanocomposite porous polymer membrane's morphology and porous structure was performed using a scanning electron microscope (SEM). DSC analysis was used to evaluate the thermal behaviour of the nanocomposite porous membranes. The electrical and dielectric studies confirmed the structural reformation of the polymer electrolyte materials. It was found that 8% nanofiller is the best conducting composition for maximum ionic conductivity, dielectric constant and Mg2+ ion mobility. The incorporation of ZrO2 nanofiller predominantly increases the number of free ions and mobility of the charge carriers in the composite polymer electrolyte systems.

Solid state polymer electrolytes have been prepared by using poly (ethylene oxide) (PEO) and KClO 4 salt in the Wt% ratios of (90:10), (80:20) and (70:30)