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Neutron Diffraction Study of LiNi0.8Mn0.2O2

✍ Scribed by A. Hirano; R. Kanno; Y. Kawamoto; Y. Nitta; K. Okamura; T. Kamiyama; F. Izumi

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
227 KB
Volume
134
Category
Article
ISSN
0022-4596

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✦ Synopsis

Structure of the layered oxide, LiNi 0.8 Mn 0.2 O 2 , was determined by TOF neutron powder diffraction using space group R3 m. Its ionic distribution was determined to be [Li 0.956 Ni 0.044 ] 3a -(Ni 0.791 Mn 0.209 ) 3b O 2 . Slightly higher temperature of the synthesis caused the disordered arrangement of the Ni ions in the Li 3a sites. Nevertheless, the manganese ions introduced into the lattice were situated only at the Ni sites. The structural changes caused by the manganese substitution are clarified, and the relationship between the ionic distribution and the cathodic properties of the lithium cells is discussed.

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