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Erschienen in: Cellulose 18/2022

14.10.2022 | Original Research

Cellulose-ceramic composite flexible paper separator with improved wettability and flame retardant properties for lithium-ion batteries

verfasst von: Mononita Das, Pradip Sekhar Das, Rajendra Nath Basu, Mir Wasim Raja

Erschienen in: Cellulose | Ausgabe 18/2022

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Abstract

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 °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/cm2 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 lithium-ion batteries.

Graphical abstract

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Metadaten
Titel
Cellulose-ceramic composite flexible paper separator with improved wettability and flame retardant properties for lithium-ion batteries
verfasst von
Mononita Das
Pradip Sekhar Das
Rajendra Nath Basu
Mir Wasim Raja
Publikationsdatum
14.10.2022
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 18/2022
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-022-04873-3

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