Transport, structural and thermal studies on nanocomposite polymer blend electrolytes for Li-ion battery applications

• Published in: Current applied physics Vol. 12; no. 3; pp. 789 - 793
• Main Authors: Rajendran, S., Kesavan, K., Nithya, R., Ulaganathan, M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2012; 한국물리학회
• Subjects: Ac impedance; Acetates; barium; Barium Titanate; Barium titanates; batteries; Battery; Composite polymer electrolyte; composite polymers; Conductivity; Electrolytes; ethylene; impedance; Ionic conductivity; lithium; Nanocomposites; Nanomaterials; Nanostructure; plasticizers; polymer nanocomposites; scanning electron microscopes; Scanning electron microscopy; solvents; temperature; thermal stability; X-ray diffraction; X-ray diffraction analysis; 물리학; Conductivity; Ac impedance; Composite polymer electrolyte; Barium Titanate; X-ray diffraction analysis
• ISSN: 1567-1739; 1878-1675
• DOI: 10.1016/j.cap.2011.11.006

Nanocomposite polymer electrolytes (NCPEs) composed of poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-co-HFP) as a host polymer, Poly(vinyl acetate) (PVAc) as an additive, Ethylene Carbonate (EC) as a plasticizer, Lithium Perchlorate as dopant salt and Barium Titanate (BaTiO3) as a filler were prepared for various concentrations of BaTiO3 using solvent casting technique. Thermal stability of the sample having maximum ionic conductivity was found using TG/DTA analysis. Nano composite polymer electrolytes were subjected to ac impedance analysis spectra for acquiring the ionic conductivity values at different temperature. Surface structure of the sample was analysed using scanning electron microscope and the complexations of samples were analysed using X-ray diffraction analysis. It was noted that the polymer electrolyte contains 8 wt. % of BaTiO3 showed maximum ionic conductivity than the other ratios of BaTiO3. ► Nano composite polymer electrolytes were prepared using solvent casting method. ► Maximum room temperature ionic conductivity is 2.56 × 10−3 Scm−1. ► Effect of BaTiO3 Concentration in the polymer-salt complex has been studied. ► Thermal stability has been estimated. ► Temperature dependent ionic conductivity was also studied.