The Role of Cellulose Based Separator in Lithium Sulfur Batteries

In this work, abundant and environmentally friendly nano-fibrillated (NFC) cellulose is used for fabrication of porous separator membranes according to the procedure adopted from papermaking industry. As-prepared NFC separators were characterized in terms of thickness, porosity, wettability, electro...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2019, Vol.166 (3), p.A5237-A5243
Main Authors: Pavlin, Nejc, Hribernik, Silvo, Kapun, Gregor, Talian, Sara Drvarič, Njel, Christian, Dedryvère, Rémi, Dominko, Robert
Format: Article
Language:English
Subjects:
Chemical Sciences
Other
Polymers
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Summary:In this work, abundant and environmentally friendly nano-fibrillated (NFC) cellulose is used for fabrication of porous separator membranes according to the procedure adopted from papermaking industry. As-prepared NFC separators were characterized in terms of thickness, porosity, wettability, electrochemical stability and electrochemical performance in lithium-sulfur and Li-symmetrical pouch cells and compared to a commercial Celgard 2320 separator membrane. Results demonstrated that morphology and electrochemical performance of NFC separator outperforms the conventional polyolefin separator. Due to exceptional interplay between lithium metal and cellulose, this research provides a self-standing NFC separator that can be used besides the lithium-sulfur also in other lithium metal battery configurations.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.0401903jes