Titre du document / Document title

LiCoO² powders prepared by the sol-gel method

Auteur(s) / Author(s)

SZATVANYI Alexandra ; CRISAN Maria ; CRISAN Dorel ; JITIANU Andrei ; STANCIU Lia ; ZAHARESCU Maria ;

Résumé / Abstract

LiCoO² seems to be one of the most widely used cathode intercalation materials in lithium-ion rechargeable batteries, which proved to have a highly stable α-NafeO² structure. The solid state phase reactions used to obtain LiCoO² have some disadvantages such as non-homogeneity of particles, poor control of stoichiometry and important grain size increases by thermal treatment. In order to avoid these disadvantages, wet chemical methods were used as suitable alternatives for advanced LiCoO² preparation. In the present work LiCoO² powders were prepared through a sol-gel process using two alternative routes: the organic (alcoholic) and the aqueous methods. The samples prepared by the two mentioned routes, were annealed at different temperatures in order to observe the structural changes which occur during the thermal treatment. Complex characterization of the obtained materials was made by specific methods such as: X-ray diffraction, differential thermal analysis and thermogravimetric analysis, IR spectroscopy and scanning electron microscopy.

Revue / Journal Title

Revue Roumaine de Chimie   ISSN 0035-3930   CODEN RRCHAX 

Source / Source

2002, vol. 47, n^o12, pp. 1255-1259 [5 page(s) (article)]

Langue / Language

Anglais
Revue : Multilingue

Editeur / Publisher

CARTIMEX, Bucuresti,   (1964) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 4610 D, 35400011269629.0040