Vinyl ethers with polysulfide and hydroxyl functions and polymers therefrom as binders for lithium-sulfur batteries

• Published in: Journal of applied polymer science Vol. 101; no. 6; pp. 4051 - 4055
• Main Authors: Trofimov, B. A., Morozova, L. V., Markova, M. V., Mikhaleva, A. I., Myachina, G. F., Tatarinova, I. V., Skotheim, T. A.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.09.2006
• Subjects: binders; cationic polymerization; polysulfides; vinyl ethers
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.23222

Bis‐[3‐(vinyloxyethoxy)‐2‐hydroxypropyl‐]polysulfides (BVPS) have been prepared by reacting ethylene glycol vinyl glycidyl ether (EGVGE) with Na2S4 in the presence of NaHCO3 and a phase transfer catalyst, triethylbenzylammonium chloride. The polysulfides obtained are inactive in radical polymerization but polymerize readily upon thermal initiation (140°C, 1 h) or in the presence of cationic catalysts [BF3·OEt2, CF3COOH, H(AuCl4)·4H2O, LiBF4‐dimethoxyethane, 20–70°C]. Polymerization leads to the formation of crosslinked polymers. It has been shown that BVPS and their polymers can be used as active binders in cathode compositions of lithium–sulfur power sources. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 4051–4055, 2006