Nano lithium aluminate filler incorporating gel lithium triflate polymer composite: Preparation, characterization and application as an electrolyte in lithium ion batteries

Gel polymer composites electrolytes containing nano LiAIO(2) as filler were prepared using a solution cast technique and characterized using different techniques such as X-ray diffraction (XRD), thermal analysis (TG, DSC), Fourier transform infra red spectroscopy (FT-IR) and scanning electron microscope (SEM). X-ray diffraction analysis showed the effect of lithium tri fluoro methane sulphonate (LiCF3SO3), poly vinyl acetate (PVAc) and nano lithium aluminate (LiAlO2) on the crystalline structure of the poly vinylidene fluoride -co- hexa fluoro propylene (PVDF-co-HFP) matrix containing ethylene carbonate (EC) and diethyl carbonate (DEC) as plasticizers. FT-IR analysis confirmed both the good dissolution of the LiCF3SO3 salt and the good interaction of the nano LiAlO2 filler with the polymer matrix. TG analysis showed the good thermal stability of the LiAlO2 samples compared to the free one. Also, addition of nano LiAlO2 filler enhanced the conductivity value of the polymer composites electrolytes. The sample containing 2 wt% of LiAIO(2) showed the highest conductivity value, 4.98 x 10(-3) Omega(-1) cm(-1) at room temperature, with good thermal stability behavior (T-d = 362 degrees C). This good conductive and thermally stable polymer nano composite electrolyte was evaluated as a promising membrane for lithium ion batteries application. (C) 2016 Elsevier Ltd. All rights reserved.