Transport Properties of Nano-sized TiO2-based Composite Polymer Electrolyte Prepared by a Green Method

• Published in: Journal of the Chinese Chemical Society (Taipei) Vol. 59; no. 10; pp. 1250 - 1257
• Main Authors: Lin, Yun-Chih, Cheng, Ju-Hsiang, M., Venkateswarlu, Wang, Fu-Ming, Santhanam, Raman, Hwang, Bing Joe
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.10.2012; WILEY‐VCH Verlag
• Subjects: AC impedance; Nano-sized TiO2; Polarization; Polymer electrolyte; TEM
• ISSN: 0009-4536; 2192-6549
• DOI: 10.1002/jccs.201200254

The transport properties of the nano‐sized TiO2‐based composite polymer electrolyte (CPE) membrane prepared by a green process were investigated. The ion transport phenomena of the CPE was probed by 7Li solid state NMR spectroscopy and it was found that the lithium ions exist in different environments and were respectively ascribed to the interactions of lithium ions and ether groups, anions and also nano‐sized TiO2 particles. Further, the NMR line width become narrowing with temperature suggests that the decrease of ion‐pair interaction in themodified CPE. The NMR data is consistent with the conductivity data observed from impedance spectroscopy as a function of temperature. These results suggest that the CPE could be prepared satisfactorily by a greenmethod in which water was used as a solvent instead of organic solvents like THF. In addition, the developed green method is simple, cost effective and environmentally benign due to the absence of hazardous organic solvents. The transport properties of the nano‐sized TiO2‐based composite polymer electrolyte (CPE) membrane prepared by a green process in which water was used as a solvent instead of organic solvents like THF were satisfactorily. In addition, the developed green method is simple, cost effective and environmentally benign due to the absence of hazardous organic solvents.