Characterization of nanoparticles of LiMn2O4 synthesized by citric acid sol-gel method

被引：129

作者：

Hwang, BJ ^{[1
]}

Santhanam, R ^{[1
]}

Liu, DG ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Microelectrochem Lab, Taipei 106, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2001年 / 97-8卷

关键词：

LiMn2O4; sol-gel synthesis; citric acid;

D O I：

10.1016/S0378-7753(01)00635-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanoparticles of Lithium manganese oxide (LiMn2O4) spinel oxides have been synthesized from aqueous solutions of metal acetate containing citric acid as a chelating agent by a sol-gel method. The influence of calcination temperature on the physicochemical properties of LiMn2O4 powders in air atmosphere has been analyzed by means of X-ray diffraction (XRD) and electron microscopic techniques. The thermal behavior of the material has been examined by thermogravimetry (TG) and differential thermal analysis (DTA). Two sharp and well-defined peaks obtained from cyclic voltammetry of Li/1 M LiPF6-EC/DEC electrolyte/LiMn2O4 cell reveal that the LiMn2O4 particles are highly crystalline and insertion-extraction mechanism occur at two stages in the 4 V region. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：443 / 446

页数：4