▎ 摘　　要

NOVELTY - The battery (110) has an inner structure (117) comprising a positive electrode, a negative electrode, a separator and an electrolytic solution (107). An exterior body (116) surrounds the inner structure and comprises first and second exterior films, and a layer that comprises graphene between the first and the second exterior films, where the first exterior film or the second exterior film comprises an organic material. The graphene comprises a region where a concentration of oxygen is higher than or equal to 2 atomic % and lower than or equal to 20 atomic %. USE - Secondary battery for an electronic device (claimed) in different applications e.g. air conditioners and vehicles such as hybrid electric vehicles (HEVs), electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs). Uses include but are not limited to a lead storage battery, lithium-ion polymer secondary battery, nickel-hydrogen storage battery, nickel-cadmium storage battery, nickel-iron storage battery, nickel-zinc storage battery, silver oxide-zinc storage battery, solid-state battery, air battery and a primary battery for a TV device, computer monitor, camera such as digital cameras and digital video cameras, digital photo frame, mobile phone, portable game machine, portable information terminal, audio reproducing device and large game machines such as pachinko machines. ADVANTAGE - The battery suppresses concentration of local stress when the secondary battery is bent, so that breakage of the exterior body can be prevented. The battery reduces the amount of charge that leaks from battery cells, which do not belong to the discharge battery cell group, so that off-state current of an oxide semiconductor transistor is low. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a secondary battery. Stacks (100a-100d) Electrolytic solution (107) Secondary battery (110) Exterior body (116) Inner structure (117)