| 摘要 |
PURPOSE: To provide a lithium secondary battery capable of ensuring mechanical strength of a battery without use of a current collecting ribbon, having high weight and volume energy densities, and capable of easily forming battery capacity series by producing a positive electrode unit and a negative electrode unit in specified structure, and alternately layering these units. CONSTITUTION: A stacked lithium secondary battery is made of a layered product 1 formed by alternately layering positive electrode units 2 and negative electrode units 6. The units 2, 6 comprise separators 3, 7, active material layers 4, 8 placed on one side of each of separators 3, 7, and internal electrode layers 5, 9 placed on active material layers 4, 8 respectively, and they are folded double so that the internal electrode layers 5, 9 come inside (10 and 11 are outer electrodes.). |
