Sheet type lithium secondary battery

摘要

A sheet type lithium secondary battery comprising a negative electrode sheet (1) having an active material layer (12) on one side and a positive electrode sheet (2) having active material layers (22) on both sides which is inserted between flaps of a negative electrode sheet (1) folded with said active material layer (12) placed inside, and a separator (3) impregnated with a nonaqueous liquid electrolyte and set between the active material layers of the negative electrode sheet and positive electrode sheet. Inasmuch as the sheet type lithium secondary battery of the present invention is superior to conventional products in space factor and light-weightedness, and highly safe, it is suitable as a battery for cellular phones and electronics such as personal computer.