| 摘要 |
The present invention is a lithium ion secondary cell having a separator porosity of 80%-98% and satisfying condition (1) and/or (2): (1) The cathode has a first current collector and a cathode composite formed on at least one surface of the first current collector, the amount of cathode composite formed on the one surface of the first current collector being 1 mg/cm2-10 mg/cm2, and the volume porosity of the cathode composite being 20-45 vol%. (2) The anode has a second current collector and an anode composite formed on at least one surface of the second current collector, the amount of anode composite formed on the one surface of the second current collector being 1 mg/cm2-10 mg/cm2, the volume porosity of the anode composite being 20-45 vol%. |
