Synthesis and characterization of high performance polyimide nanofibers and application on lithium-ion batteries

International Conference and Exhibition on Materials Chemistry

March 31-April 01, 2016 Valencia, Spain

Emre Aytan, Nilhan Kayaman Apohan and Mustafa Hulusi Ugur

Marmara University Institute of Science, Turkey

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Synthesis and characterization of high performance polyimide nanofibers and application on lithium-ion batteries: Polyimide (PI), as one of high-performance engineering polymers, has been widely applied in many advanced technology fields due to their great thermal stability, remarkable mechanical properties, low dielectric constants and inertness to solvent and radiation resistance. Therefore, electrospun PI nanofiber membranes with diverse molecular structures, controllable fiber diameters and membrane thicknesses have been intensively investigated to obtain high-performance and multifunctional composite fiber membranes. Additionally, it shows good affinity with gel electrolytes which contain plasticizing solvents like ethylene and ethyl methyl carbonate. Thus, these solvents can be strongly combined within the polymer chains in network that can largely enhance the electrolyte retention of PI-based battery electrolytes. In this work; a new highly ion conductive plasticized PI-reinforced UV-cured electrolyte membrane has been synthesized. Oxi-4,4'-dianiline (ODA) and 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) based polyimide fibers were fabricated via electrospinning method and then UV cured with Bisphenol A Ethoxylate Dimethacrylate (BEMA), poly (ethylene glycol) methyl ether methacrylate (PEGMA) and 3-(methacryloyloxy) propyltrimethoxysilane (MEMO) containing formulations. In order to measure electrochemical stability and ionic conductivity for Li batteries, UV cured films doped with lithium hexafluorophosphate (LiPF6). The structural and electrochemical properties of the electrolytes thus obtained were systematically examined by a variety of methods including FTIR, TGA, DSC, EIS, LSV and SEM measurements.

Biography :

Emre Aytan has completed his Bachelor’s degree from Marmara University and is an MSc student at Marmara University Institute of Science. His thesis is on developing a polyimide fiber electrolyte via electrospining with cooperation of PhD student M H Ugur and his advisor N K Apohan.

Email: emreaytan@hotmail.com