| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery in which deterioration of high-rate characteristics is suppressed and safety at the time of internal short circuit is further improved than a conventional one. <P>SOLUTION: The non-aqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, the positive electrode contains a positive electrode active material capable of storing and releasing lithium ions, the positive electrode active material contains secondary particles 12, and the secondary particles 12 are an aggregate containing primary particles 11 and silicon oxide 13, the primary particles 11 contain a lithium nickel compound oxide, and the silicon oxide 13 exists at least in grain boundary between primary particles. <P>COPYRIGHT: (C)2009,JPO&INPIT |
