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Copolymer; SEM; XRD; DSC; LiClO₄.

The lithium ion conducting copolymer electrolytes based on poly(vinylidene chloride-co-acrylonitrileco- methyl methacrylate) P(VdCl-co-AN-co-MMA)-lithium per chlorate (LiClO₄) (P(VdCl-co-AN-co-MMA): LiClO₄) and poly(vinylidene chloride-co-acrylonitrile-co-methyl methacrylate)P(VdCl-co-AN-co-MMA)-lithium per chlorate (LiClO₄)-ethylene carbonate (EC) (P(VdCl-co-AN-co-MMA):LiClO₄:EC) of different compositions were prepared by solution-casting technique. Structural and surface morphological characterizations were studied by X-ray diffraction analysis and scanning electron microscopy measurements, respectively. Thermal and conductivity behaviour of copolymer–salt and copolymer–salt–plasticizer complexes were studied by employing differential scanning calorimetry and AC impedance measurements, respectively. The highest bulk conductivity was found to be 1.94 × 10^-4 S cm^-1 at 303 K for the plasticized sample. The dielectric behaviour and relaxation parameters of the samples have been presented and discussed.

D Inbavalli^{1 2} S Selvasekarapandian² C Sanjeeviraja³ R Baskaran⁴ S Nithya^{2 5} Junichi Kawamura⁴ Yoshitake Masuda⁶

1. Research and Development Centre, Bharathiar University, Coimbatore 641 046, India
2. Materials Research Centre, Coimbatore 641 045, India
3. Department of Physics, Alagappa University, Karaikudi 630 003, India
4. Institute of Multi Disciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
5. SRNM College, Sattur 626 203, India
6. National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan

Published

February 2015

Manuscript received

13 October 2013

Manuscript revised

8 March 2014