NOVELTY - A laminated electric core has primary current collecting substrate (102), primary electrode active material layer (111) coated on inner surface of primary current collecting substrate, secondary current collecting substrate (104), secondary electrode active material layer (113) coated on inner surface of secondary current collecting substrate, separator (112), electrolyte, adhesive layer (114), primary sealant layer (122a) on inner surface of primary current collecting substrate, and secondary sealant layer (122b) on inner surface of secondary current collecting substrate.    USE - Laminated electric core is used for lithium-ion battery (claimed) for mobile phones and laptops.    ADVANTAGE - The lithium-ion battery comprising laminated electric core has excellent capacity, durability and cycle performance and has simple structure, and is economical.    DETAILED DESCRIPTION - A laminated electric core has primary current collecting substrate, primary electrode active material layer coated on an inner surface of the primary current collecting substrate, secondary current collecting substrate, secondary electrode active material layer coated on an inner surface of the secondary current collecting substrate, separator sandwiched between the primary and secondary electrode active material layers, electrolyte retained at least in the separator, adhesive layer provided between primary electrode active material layer and separator, primary sealant layer on the inner surface of the primary current collecting substrate along peripheral edges of the primary electrode active material layer, and secondary sealant layer on the inner surface of the secondary current collecting substrate along peripheral edges of the secondary electrode active material layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view explaining manufacture of laminated electric core.    Current collecting substrates (102,104)    Electrode active material layers (111,113)    Separator (112)    Adhesive layer (114)    Sealant layers (122a,122b)