Secondary battery and its manufacturing method and system

It is possible to improve the adhesion between the metal foil and the active material, that it is thinner and lighter, it has a flexible, provides excellent secondary battery and a manufacturing method thereof charge and discharge property . The positive electrode active material layer, the electrolyte layer, the cell or the active material layer each layer of the anode active material layer are sequentially stacked, the electrolyte layer, the cell layers of the positive electrode active material layer are sequentially stacked, the surface roughness RMS wherein the but has been formed on the conductive thin substrate is 0.8μm or less.