| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery having high capacity and excellent in safety at the time of overcharging. <P>SOLUTION: The nonaqueous electrolyte secondary battery, equipped with a cathode with a cathode mixture layer containing lithium compound oxide as a cathode active material, has an electric capacity per volume of a battery at charging to 4.4±0.1 V of 125 mAh/cm<SP>3</SP>or more, and a heat generating speed measured at impressing voltage of 5.0 V of 0.2 W/g per gram of a cathode active material or less, and a ratio (V)/(S) between a volume (V) (cm<SP>3</SP>) of the battery and an outer surface area (S) (cm<SP>2</SP>) of 0.185 or less. <P>COPYRIGHT: (C)2008,JPO&INPIT |
