[en] Abstract LiCo2/3Ni1/6Mn1/6O2 layered oxide was synthesized by the combustion method that led to a crystalline phase with good homogeneity and low particles size. The structural properties of the prepared positive electrode material were investigated by performing XRD Rietveld refinement. Practically no Li/Ni mixing was detected evidencing that the studied compound adopts almost an ideal α-NaFeO2 type structure. The Li||LiCo2/3Ni1/6Mn1/6O2 cell showed a discharge capacity of 199mAhg−1 when cycled in the 2.7–4.6V potential range while the best cycling performances were recorded when the upper cut off is fixed at 4.5V. Structural changes in LixCo2/3Ni1/6Mn1/6O2 with lithium electrochemical de-intercalation were studied using X-ray diffraction. This study clearly shows the existence of a solid solution domain in the 0.1
Disciplines :
Chemistry
Author, co-author :
Mahmoud, Abdelfattah ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Saadoune, Ismael
Amarilla, José Manuel
Hakkou, Rachid
Language :
English
Title :
On the LiCo2/3Ni1/6Mn1/6O2 positive electrode material