1. High performance lithium cobalt oxides prepared in molten KCl for rechargeable lithium-ion batteries
- Author
-
Liquan Chen, Wentao Zhu, Xinping Qiu, S. C. Zhang, Zhiqi He, and Hongying Liang
- Subjects
Chemistry ,Scanning electron microscope ,Inorganic chemistry ,Analytical chemistry ,chemistry.chemical_element ,Electrochemistry ,lcsh:Chemistry ,chemistry.chemical_compound ,lcsh:Industrial electrochemistry ,lcsh:QD1-999 ,Ternary compound ,Lithium ,Particle size ,Lithium oxide ,Cobalt oxide ,Cobalt ,lcsh:TP250-261 - Abstract
Lithium cobalt oxides (LiCoO2) powders have been easily prepared using molten KCl as high-temperature solvent. X-ray diffraction (XRD) and scanning electron microscope (SEM) measurements indicate that the obtained LiCoO2 powders are homogenous and the particle size of LiCoO2 powders can be controlled by flux content and heating time. For a LiCoO2 sample heating at 850 °C for 1 h, at molar ratio of KCl/CoO=4, the particle-size distribution is narrow at about 1 μm and most particles show spherical shape. Electrochemical studies indicate this sample has an excellent discharge capacity and cycling performance. Keywords: Lithium cobalt oxides, Lithium-ion batteries, Flux, Particle size
- Published
- 2004