| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery with excellent battery performance under a high-temperature environment. <P>SOLUTION: Fluorination treatment is given to a material expressed by: Li<SB>x</SB>Ni<SB>a</SB>Mn<SB>b</SB>Co<SB>c</SB>O<SB>z</SB>(0<x≤1.3, 0<a<1, 0<b<0.6, 0<c<1, a+b+c=1, 1.7≤z≤2.3) to impart a fluoride on the surface of a positive pole active substance, whereby battery performance is improved at a high-temperature environment. Further, the fluoride is imparted only on the surface of positive pole active substance particles, and not inside the particles. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
