| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium transition metal oxide having a layer structure and exhibiting more excellent cycle characteristic. <P>SOLUTION: The lithium transition metal oxide has the layer structure expressed by a composition formula Li<SB>1+X</SB>MO<SB>2</SB>, wherein M in the composition formula is composed of a transition metal containing Mn, Co and Ni in the atomic ratio of nearly 1:1:1, (x) being 0.01-0.5. When the lithium transition metal oxide is used as a positive active substance for a lithium battery, the ratio of change ä100-(z/y×100)} (%) of the lattice volume (z)(Å<SP>3</SP>) measured after charged up to 220 mAh/g charging capacity to the lattice volume (y)(Å<SP>3</SP>) before charged is ≤3.0% to stabilize the lattice volume, so that the lithium battery excellent in the cycle characteristic is obtained. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
