| abstract |
(57) [Problem] To provide a method for producing a lithium polymer secondary battery having high productivity and high performance. SOLUTION: By adding a surfactant to a pregel electrolyte solution, batch impregnation of a pregel electrolyte solution into a battery laminate or a battery roll under a reduced pressure atmosphere becomes possible, and an initial capacity, a high rate characteristic, and a rate characteristic are obtained. And a high-performance lithium polymer secondary battery having excellent cycle characteristics. |