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Int. J. Electroactive Mater. 2 (2014) 28-33

Characterization of Composite Proton Conducting Polymer Electrolyte Based on Poly(vinyl alcohol)

K.P. Radha1, Selvasekarapandian Subramanian2*, S. Karthikeyan3, M. Hema4, C. Sanjeeviraja5, D. Vinoth Pandi6

1Department of Physics, S.F.R.College for Women, Sivakasi, Tamilnadu, India
2Institute, Materials Research Center, Coimbatore, Tamil Nadu, India
3Department of Physics, Ramco Institute of technology, Rajapalayam, Tamilnadu, India
4Department of Physics, Kamaraj College of Engineering and Technology, Virudhunagar, Tamilnadu, India
5Department of Physics, Alagappa Chettiar College of Engineering and Technology, Karaikudi, Tamilnadu, India
6Institute, Materials Research Centre , Coimbatore, Tamilnadu, India

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Abstract : Composite polymer electrolyte consisting of poly (vinyl alcohol) (PVA), ammonium fluoride NH4F and nano filler ZrO2 have been prepared using solution casting technique. The addition of 2.00 mol% of the nano filler ZrO2 to the polymer electrolyte 85PVA:15NH4F enhances the ionic conductivity from 6.9 x 10-6 S cm-1 to 3.42 x 10-5 S cm-1 at room temperature. The study of transference number measurements leads to the conclusion that the conductivity has been influenced by the mobility and diffusion co-efficient of the cation. From DSC analysis, it has been observed that 85PVA:15NH4F:2.00ZrO2 electrolyte has the lowest glass transition temperature 356.7 K due to interaction between the filler and polymer structure. SEM image of 85PVA:15NH4F:2.00ZrO2 electrolyte shows the space between the nano particles which forms a new kinetic path via polymer-ceramic boundaries for proton ion transport thereby enhance the ionic conductivity. The amorphous nature of composite polymer electrolyte has been confirmed by XRD studies.

Keywords : XRD,DSC,Impedance analysis,Transport analysis