| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery excellent in press working performance of a positive electrode plate, capable of making the positive electrode plate and the battery highly dense, excellent in charge and discharge cycle characteristics of the positive electrode, and excellent in high temperature shell life characteristics. <P>SOLUTION: Li<SB>2</SB>CO<SB>3</SB>and Co<SB>3</SB>O<SB>4</SB>are mixed and calcined and LiCoO<SB>2</SB>with D50% particle size of 7 μm or more is obtained, and Co<SB>3</SB>O<SB>4</SB>is mixed to the LiCoO<SB>2</SB>obtained so that the ratio of Co<SB>3</SB>O<SB>4</SB>to the total mass of the positive electrode active material after mixture may be 0.1 wt.% or more and 5 wt.% or less and the positive electrode active material is obtained. The positive electrode plate 4 is formed using this positive electrode active material, and the non-aqueous electrolyte secondary battery 1 is manufactured using this positive electrode plate 4 formed, a negative electrode plate 3, a separator 5, and a non-aqueous electrolyte. <P>COPYRIGHT: (C)2007,JPO&INPIT |
