Synthesis and Characterization of Nanostructured Fast Ionic Conductor Li0.30La0.56TiO3
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- 作者：Quoc Nghi Pham ; Claude Bohnké ; Marie-Pierre Crosnier-Lopez ; Odile Bohnké
- 刊名：Chemistry of Materials
- 出版年：2006
- 出版时间：September 5, 2006
- 年：2006
- 卷：18
- 期：18
- 页码：4385 - 4392
- 全文大小：430K
- 年卷期：v.18,no.18(September 5, 2006)
- ISSN：1520-5002
文摘
The preparation of a pure and nanostructured phase of the fast lithium conductor Li0.30La0.56TiO3 atlow temperature (350 
C for 2 h) is reported for the first time. The synthesis has been carried out by thePechini-type in-situ polymerizable method. It has been shown that the molar ratios ethylene glycol/citricacid and citric acid/metals, as well as the temperature, are crucial parameters during this synthesis. Acareful control of the temperature during polyesterification allowed us to prepare the nanosized phase ofoxide and to avoid the formation of thermally stable impurities. The crystallite size (20-30 nm) of theoxide has been determined by the analysis of the broadening of the powder X-ray diffraction lines. Theparticles size has been confirmed by transmission electron microscopy and the macroporous character ofthe powder has been evidenced by scanning electron microscopy.
C for 2 h) is reported for the first time. The synthesis has been carried out by thePechini-type in-situ polymerizable method. It has been shown that the molar ratios ethylene glycol/citricacid and citric acid/metals, as well as the temperature, are crucial parameters during this synthesis. Acareful control of the temperature during polyesterification allowed us to prepare the nanosized phase ofoxide and to avoid the formation of thermally stable impurities. The crystallite size (20-30 nm) of theoxide has been determined by the analysis of the broadening of the powder X-ray diffraction lines. Theparticles size has been confirmed by transmission electron microscopy and the macroporous character ofthe powder has been evidenced by scanning electron microscopy.