▎ 摘　　要

NOVELTY - A power storage device (400) comprises positive electrode (403); negative electrode (406); and electrolyte (408), where negative electrode comprises current collector (404), active material layer (405) over the current collector comprising 1st particle of active material, 1st film comprising inner surface on 1st region of 1st particle, 2nd film on the 1st film at the 1st region of the 1st particle, and a graphene. The 1st film comprises metal oxide, where the 2nd film comprises organic material and inorganic material. The 2nd film is in contact with a 2nd region of the 1st particle, where graphene partially surrounds the 1st particle. USE - A power storage device for display devices of televisions, monitors, etc.; lighting devices; desktop personal computers and laptop personal computers; word processors; image reproduction devices which reproduce still images and moving images stored in recording media, such as digital versatile disks (DVDs); portable compact disk (CD) players; portable radios; tape recorders; headphone stereos; stereos; table clocks; wall clocks; cordless phone handsets; transceivers; portable wireless devices; mobile phones; car phones; portable game machines; calculators portable information terminals; electronic notebooks; e-book readers; electronic translators; audio input devices; video cameras; digital still cameras; toys; electric shavers; high-frequency heating appliances, such as microwave ovens; electric rice cookers; electric washing machines; electric vacuum cleaners; water heaters; electric fans; hair dryers; air-conditioning systems, such as air conditioners, humidifiers, and dehumidifiers; dishwashers; dish dryers; clothes dryers; futon dryers; electric refrigerators; electric freezers; electric refrigerator-freezers; freezers for preserving DNA; flashlights; electric power tools, such as chain saws; smoke detectors; medical equipment, such as dialyzers; guide lights; traffic lights; belt conveyors; elevators; escalators; industrial robots; power storage systems; power storage devices for leveling the amount of power supply and smart grid; electric vehicles (EV); hybrid electric vehicles (REV) which include both an internal-combustion engine and a motor; plug-in hybrid electric vehicles (PHEV); tracked vehicles in which caterpillar tracks are substituted for wheels of these vehicles; motorized bicycles including motor-assisted bicycles; motorcycles; electric wheelchairs; golf carts; boats; ships; submarines; helicopters; aircrafts; rockets; artificial satellites; space probes; planetary probes; and spacecrafts. ADVANTAGE - The decomposition reaction of the electrolyte solution and the like causing a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium loss battery, resulting in an improvement in the cycle performance of the lithium ion battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) power storage device (D1) comprising positive electrode, electrolyte, and negative electrode which has current collector, active material layer comprising 1st particle of active material, 2nd particle of active material, 1st film comprising inner surface on 1st region of 1st particle, 2nd film on 1st film at the 1st region of 1st particle, and graphene, where 1st film comprises metal oxide, 2nd film comprises organic material and inorganic material, 2nd film is in contact with 2nd region of 1st particle, and graphene partially surrounds the 2nd particle; and (2) power storage device (D2) comprising positive electrode, electrolyte, and negative electrode which has current collector, active material layer comprising 1st particle of active material, 2nd particle of active material, 1st film comprising inner surface on 1st region of 1st particle, 2nd film on 1st film at the 1st region of 1st particle, and graphene, where 1st film comprises metal oxide, 2nd film comprises organic material and inorganic material, 2nd film is in contact with 2nd region of 1st particle, and graphene covers the 1st particle and the 2nd particle. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the laminated lithium ion battery. Power storage device or laminated lithium ion battery (400) Positive electrode (403) Negative electrode current collector (404) Negative electrode active material layer (405) Negative electrode (406) Electrolyte (408)