The presence of nanostructured Al2O3 in PMMA-based gel electrolytes

✍ Scribed by Ondřej Krejza; Jana Velická; Marie Sedlaříková; Jiří Vondrák

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 164 KB
• Volume: 178
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/j.jpowsour.2007.11.018

✦ Synopsis

Gel polymer electrolytes (GPEs)-based on poly(methyl methacrylate) PMMA and propylene carbonate (PC) with LiClO 4 or NaClO 4 salt are prepared using either the commercial product Superacryl ® or directly from the monomer and AIBN (2,2 -azobis(isobutyronitrile)) initiator. The nanostructured aluminum oxide is added to the mentioned systems in various ratios. Solutions of liquid PC-perchlorate and polymer electrolytes are compared with focus on ionic conductivity. The ionic conductivity of polymer-based electrolytes is significantly influenced (of almost by one half order of magnitude at room temperature) by the addition of nanosized Al 2 O 3 . On the contrary, the conductivity of liquid electrolytes is decreased by the addition of alumina in the blend. A slight enhancement of mechanical properties is observed.