Reference : On the LiCo2/3Ni1/6Mn1/6O2 positive electrode material
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
On the LiCo2/3Ni1/6Mn1/6O2 positive electrode material
Mahmoud, Abdelfattah mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Saadoune, Ismael [> >]
Amarilla, José Manuel [> >]
Hakkou, Rachid [> >]
Electrochimica Acta
Pergamon Press - An Imprint of Elsevier Science
4081 - 4086
Yes (verified by ORBi)
[en] Lithium-ion batteries ; Layered oxide ; Combustion method ; LiCoNiMnO
[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<x<1.0 composition range while for x=0.1, a new phase appears explaining the decrease of the electrochemical performance when the cell is cycled at high upper cut off voltage.
CNRST Morocco/CSIC Spain (project 2010-2011)
Researchers ; Professionals ; Students

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