The Role of Cellulose Based Separator in Lithium Sulfur Batteries. Issue 3 (27th December 2018)

• Record Type: Journal Article
• Authors: Pavlin, Nejc; Hribernik, Silvo; Kapun, Gregor; Talian, Sara Drvarič; Njel, Christian; Dedryvère, Rémi; Dominko, Robert
• Is Part Of: Journal of the Electrochemical Society. Volume 166:Issue 3(2019)
• Page Start: A5237
• Page End: A5243
• Publication Date: 2018-12-27
• Subjects: Batteries - Lithium -- Li metal protection -- Li-S battery -- separator; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0401903jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : 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.