Enhanced conductivity of plasticized polymer electrolytes containing chelating groups

✍ Scribed by Yu-Hao Liang; Chi-Yuan Hung; Cheng-Chien Wang; Chuh-Yung Chen

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 941 KB
• Volume: 188
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/j.jpowsour.2008.11.101

✦ Synopsis

Poly(AN-co-GMA-IDA) has been prepared by copolymerizing acrylonitrile (AN) and 2-methylacrylic acid 3-(bis-carboxymethylamino-2-hydroxy-propyl ester) (GMA-IDA). The polymers were mixed with the plasticizer ethylene carbonate (EC) and lithium perchlorate (LiClO 4 ) to form gel polymer electrolytes (GPE). Fourier-transform infrared spectroscopy (FT-IR) has revealed that the GMA-IDA unit can improve the dissociation of the lithium salt. Furthermore, the GMA-IDA can hinder the crystallization of EC, thereby improving the conductivity of the GPE. This has been established by differential scanning calorimetry (DSC) and X-ray diffraction (XRD) analysis. The interaction between GMA-IDA and EC has been confirmed by FT-IR and 7 Li solid-state NMR. The maximum conductivity measured in this investigation was 9.75 × 10 -4 S cm -1 .