LOW COST BIO-BASED IONIC LIQUID CRYSTAL MEMBRANE USEFUL FOR ENERGY STORAGE SYSTEMS amp; PREPARATION THEREOF

摘要

In this invention an attempt has been made to synthesize bio-based ionic liquid crystals from 3-pentadecylphenol derived from cashew nut sell liquid (CNSL), a waste bye-product from cashew industries. Ionic liquid crystals obtained by the quaternization of aryl alkyl ether (formed by the O-alkylation of 3-pentadecylphenol) with various tertiary amines. Here we demonstrate the preparation of series of porous ionic liquid crystal films by binding them with PVDF: HFP and for their suitability as solid electrolytes for Lithium batteries. In this regard, Li batteries were fabricated with LiFeP04 as cathode. Improved electrochemical and cycling stability has been observed for the batteries and a specific capacity of 170 mAh/g with 99% coulomb efficiency was obtained for 0.05C rate. More interestingly, conversion of an industrial waste bye-product into energy efficient green ionic liquid crystal and the application of derived films in high performing energy storage devices especially Li batteries sound intriguing.