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Effect of Nano-Sized Ceramic Fillers on the Performance of Polymer Electrolytes Based on Electrospun Polyacrylonitrile Nanofibrous Membrane for Lithium Ion Batteries

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Composite nanofibrous membranes of polyacrylonitrile containing nano-sized ceramic fillers BaTiO3, SiO2, or Al2O3 were prepared by electrospinning technique. Morphology of the membranes and ceramic fillers was examined by field emission scanning electron microscopy and transmission electron microscopy, respectively. The membranes show uniform morphology with an average fiber diameter in 400–600 nm range. The interlaying of fibers generates a large number of fully interconnected voids of various sizes which are effectively utilized for the preparation of gel polymer electrolytes by loading the liquid electrolyte 1 M LiPF6 in ethylene carbonate/dimethyl carbonate. Thermal properties of the membranes and gel polymer electrolytes were examined by differential scanning calorimetry. Interactions associated with the membranes and gel polymer electrolytes were investigated with Fourier Transform infrared and FT-Raman spectroscopies. The influence of nano-sized ceramic fillers on membrane morphology, electrolyte uptake, ionic conductivity, and performance in Li/LiFePO4 cell has been evaluated. The results show that nano-sized ceramic fillers have a significant contribution to the improved electrochemical properties of gel polymer electrolytes in lithium batteries.
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Keywords: CERAMIC FILLER; ELECTROSPUN MEMBRANE; GEL POLYMER ELECTROLYTE; IONIC CONDUCTIVITY; LITHIUM ION BATTERIES; POLYACRYLONITRILE

Document Type: Research Article

Publication date: April 1, 2016

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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