Preparation of Li x Ca1−x TiO3 solid electrolytes by the sol–gel method
- Resource Type
- Article
- Authors
- Wang, Hualin; Cheng, Jihai; Zhai, Linfeng; Cheng, Jigui
- Source
- Solid State Communications. Jun2007, Vol. 142 Issue 12, p710-712. 3p.
- Subject
- *LITHIUM
*CALCIUM
*TITANIUM dioxide
*ELECTROLYTES
- Language
- ISSN
- 0038-1098
Abstract: Solid electrolytes based on lithium doped CaTiO3,Li x Ca1−x TiO3 () were prepared by the sol–gel method in an ethanol and water mixture medium. Phase identification and morphology observation of the products were carried out by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that the Li x Ca1−x TiO3 powders sintered above 700 ∘C are of cubic perovskite structure and the mean size of Li x Ca1−x TiO3 powders is about 80 nm. A study of ionic conductivity by AC impedance implies that the conductivity of Li x Ca1−x TiO3 increases with the increase of substituted Li+ ions and reaches a maximum value of 4.53×10−4 S cm−1 at , and then decreases for . [Copyright &y& Elsevier]