| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve charging/discharging cycle property of a non-aqueous electrolyte secondary battery. <P>SOLUTION: The ratio of specific surface area S2/S1, which is the ratio of the specific surface area S1 of anode activator of an anode formed by arranging an anode activator layer on both faces of an anode current collector, to the specific surface area S2 of cathode activator of a cathode formed by arranging a cathode activator layer on both faces of a cathode current collector, is turned into a range of 0.5≤S2/S1≤4. Charging/discharging cycle property of the non-aqueous electrolyte secondary battery can be improved by turning a ratio of impedance Z2/Z1, which is the ratio of the absolute value Z2 of imaginary part of impedance of the cathode to the absolute value Z1 of imaginary part of impedance of the anode, into a range of 0.2≤Z2/Z1≤1. <P>COPYRIGHT: (C)2007,JPO&INPIT |
