(JP10172606-A)      Lithium ion secondary battery comprises a positive electrode (3) with an active layer (7) formed on a collector (6), a negative electrode (5) with an active layer (9) formed on a collector (10), a separator (4) between the two holding a lithium ion-containing electrolytic solution, and a porous adhesion layer (11) bonding positive and negative active layers to the separator and mutually connecting the two electrodes through the electrolytic solution. Also claimed is the fabrication of the battery by coating the separator and the attaching faces of the active layers with an adhesive resin solution obtained by dispersing a fluoride resin or a mixture containing the fluoride resin as the main component in N-methylpyrrolidone, then evaporating the N-methylpyrrolidone to form the porous adhesion resin layers and supplying a lithium ion-containing electrolytic solution to the laminated body.    USE -   E.g. with portable electronic instruments.    ADVANTAGE -   The battery has good charge and discharge properties with close adherence of the electrodes to the separator without increasing ionic conduction resistance between the electrodes and without using a strong armour case so that it has large energy density and can be made into a thin and optional shape.    (US6124061-A)      Lithium ion secondary battery comprises a positive electrode (3) with an active layer (7) formed on a collector (6), a negative electrode (5) with an active layer (9) formed on a collector (10), a separator (4) between the two holding a lithium ion-containing electrolytic solution, and a porous adhesion layer (11) bonding positive and negative active layers to the separator and mutually connecting the two electrodes through the electrolytic solution. Also claimed is the fabrication of the battery by coating the separator and the attaching faces of the active layers with an adhesive resin solution obtained by dispersing a fluoride resin or a mixture containing the fluoride resin as the main component in N-methylpyrrolidone, then evaporating the N-methylpyrrolidone to form the porous adhesion resin layers and supplying a lithium ion-containing electrolytic solution to the laminated body.    USE -   E.g. with portable electronic instruments.    ADVANTAGE -   The battery has good charge and discharge properties with close adherence of the electrodes to the separator without increasing ionic conduction resistance between the electrodes and without using a strong armour case so that it has large energy density and can be made into a thin and optional shape.