Reinvestigation of the magnetic behavior of O3–LiCoO<sub>2</sub>
Langue
en
Article de revue
Ce document a été publié dans
Journal of Applied Physics. 2009, vol. 106, n° 6, p. 064914
American Institute of Physics
Résumé en anglais
Stoichiometric high temperature LiCoO<sub>2</sub> obtained by long annealing in oxygen was characterized by electron spin resonance and magnetization measurements. Both methods allow identifying unambiguously not only the ...Lire la suite >
Stoichiometric high temperature LiCoO<sub>2</sub> obtained by long annealing in oxygen was characterized by electron spin resonance and magnetization measurements. Both methods allow identifying unambiguously not only the presence of traces of cobalt oxides in the material but also paramagnetic defects in lithium cobaltite itself. We report on the presence of surface Li<sup>+</sup>-O<sup>-</sup> centers in pure LiCoO<sub>2</sub>, which has not been observed before in this material, and on the presence of Co<sup>2+</sup> related centers in argon- and subsequent oxygen-annealed samples.< Réduire
Mots clés en anglais
Annealing
Lithium compounds
Magnetisation
Paramagnetic resonance
Secondary cells
Stoichiometry
Origine
Importé de halUnités de recherche