Das, Mononita and Das, Pradip Sekhar and Basu, Rajendra Nath and Raja, Mir Wasim (2022) Cellulose-ceramic composite flexible paper separator with improved wettability and flame retardant properties for lithium-ion batteries. Cellulose, 29 (18). pp. 9899-9917. ISSN 0969-0239

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In quest of developing sustainable separator for lithium-ion batteries (LIBs), this research focuses on functionalization of low cost cellulose based commercial paper using duo-polymer and nano-SiO2 by designing a facile aqueous based industry friendly wet-coating process. Unlike commercial plastic based polyolefin separators (polypropylene/polyethylene), the developed paper separator shows superior thermal stability > 200 degrees C without dimensional shrinkage, excellent electrolyte wettability (147%) with zero contact angle, quicker electrolyte saturation and satisfactory mechanical strength (34.86-38.31 MPa). The electrochemical performance carried out in 2032 coin cells using fabricated paper separators shows comparable performance to that of commercial polypropylene (PP) based separator at different current densities of 0.05-0.4 mA/cm(2) with excellent columbic efficiency (> 96%) and good capacity retention on cycling. The developed separator is found to be compatible with most of the commercial electrodes (MCMB, -LiCoO2, -LiFePO4) used in today's LIBs. The functionalized cellulose-ceramic composite paper separator shows excellent flame retardant properties by offering an added safety features for its successful use in lithiumion batteries.

Item Type: Article
Subjects: Electronics
Divisions: Fuel Cell and Battery
Depositing User: Bidhan Chaudhuri
Date Deposited: 29 Aug 2023 07:25
Last Modified: 29 Aug 2023 07:25
URI: http://cgcri.csircentral.net/id/eprint/5437

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