UV-Cured Poly(Siloxane-Urethane)-Based Polymer Composite Materials for Lithium Ion Batteries—The Effect of Modification with Ionic Liquids

Materials

Janusz Kozakiewicz¹  Joanna Trzaskowska¹  Witold Sarna¹  Jarosław Przybylski¹  Krystyna Sylwestrzak¹  Bartosz Hamankiewicz²  Michal Krajewski²  Maciej Ratyński²  Andrzej Czerwiński² 

[1] Department of Polymer Technology and Processing, Łukasiewicz Research Network—Industrial Chemistry Institute, 01-793 Warsaw, Poland;Faculty of Chemistry, University of Warsaw, 02-093 Warsaw, Poland;

关键词: poly(siloxane-urethane)s;    lithium ion batteries;    separators;    composite polymer materials;    ionic liquids;    gel polymer electrolytes;   

DOI  :  10.3390/ma13214978

来源: DOAJ

【 摘 要 】

The results of studies on the synthesis and characterization of conductive polymer composite materials designed as potential separators for lithium ion batteries are presented. The conductive polymer composites were prepared from UV-cured poly(siloxane-urethanes)s (PSURs) containing poly(ethylene oxide) (PEO) segments and modified with lithium salts and ionic liquids (ILs). The most encouraging results in terms of specific conductivity and mechanical properties of the composite were obtained when part of UV-curable PSUR prepolymer was replaced with a reactive UV-curable IL. Morphology of the composites modified with ILs or containing a standard ethylene carbonate/dimethyl carbonate mixture (EC/DMC) as solvent was compared. It was found that the composites showed a two-phase structure that did not change when non-reactive ILs were applied instead of EC/DMC but was much affected when reactive UV-curable ILs were used. The selected IL-modified UV-cured PSUR composite that did not contain flammable EC/DMC solvent was preliminarily tested as gel polymer electrolyte and separator for lithium ion batteries.

【 授权许可】

Unknown