| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery having excellent charge discharge cycle performance, an active material for batteries used for the nonaqueous electrolyte battery, a battery pack including the nonaqueous electrolyte battery, and an automobile including the battery pack. <P>SOLUTION: An active material for batteries, a nonaqueous electrolyte battery 100 including the active material, a battery pack including the nonaqueous electrolyte battery 100, and an automobile including the battery pack are provided. The active material includes secondary particles whose average particle diameter is 1 μm or more and 100 μm or less, and which include primary particles of monoclinic system β-type titanium composite oxide, whose average primary particle diameter is 1 nm or more and 10 μm or less. And a compressive fracture strength of the secondary particles is 20 MPa or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
