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Transport Properties of Nano‐sized TiO 2 ‐based Composite Polymer Electrolyte Prepared by a Green Method
Author(s) -
Lin YunChih,
Cheng JuHsiang,
M. Venkateswarlu,
Wang FuMing,
Santhanam Raman,
Hwang Bing Joe
Publication year - 2012
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201200254
Subject(s) - chemistry , electrolyte , lithium (medication) , nano , conductivity , dielectric spectroscopy , solvent , polymer , ion , chemical engineering , composite number , ionic conductivity , polymer chemistry , organic chemistry , electrochemistry , electrode , composite material , materials science , engineering , medicine , endocrinology
The transport properties of the nano‐sized TiO 2 ‐based composite polymer electrolyte (CPE) membrane prepared by a green process were investigated. The ion transport phenomena of the CPE was probed by 7 Li 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 TiO 2 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.