Sekundär Lithium-Ion Batterien und Verfahren zur Herstellung

摘要

A lithium ion secondary battery is provided having an electric connection between electrodes maintained without requiring a strong armor metal case. Thin forms having large energy density are possible. A positive electrode (3) is prepared by bonding a positive electrode active material layer (7) to a positive electrode collector (6). A negative electrode (5) is prepared by bonding a negative electrode active material layer (9) to a negative electrode collector (10). A separator (4) is arranged between these two electrodes (3, 5) which holds a lithium ion-containing electrolytic solution. The positive electrode active material layer (7) and the negative electrode active material layer (9) are bonded to the separator (4) by a porous adhesive resin layer (11). The electrolytic solution is held in through holes (12) formed in the adhesive resin layer (11), which communicate the positive electrode active material layer (7) and the negative electrode active material layer (9) with the separator (4).