| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium secondary battery with characteristics suitable for, for example, a battery for EV/HEV, by way of excellence in long-term preservation and a high output. <P>SOLUTION: The lithium secondary battery is provided with an inner electrode body 1 made by winding round or laminating a positive electrode plate 2 with a positive electrode active material made of lithium transition metal compound oxide installed in a given region of the surface of a positive electrode metal foil body, and a negative electrode plate 3 with a negative electrode active material made of a carbonaceous material arranged in a given region of the surface of a negative electrode metal foil body through a separator 4. A value (C/A) of a ratio of mass (C(g/cm<SP>2</SP>)) of the negative electrode active material per unit installation area of the surface of the negative electrode metal foil body to mass (A(g/cm<SP>2</SP>)) of the positive electrode active material per unit installation area of the surface of the positive electrode metal foil body satisfies a relation of: 0.9≤(C/A)≤2.5, with an output of 200W or more. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
