TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Apparatus: The electrical storage apparatus performs charging/discharging control of the secondary battery based on the information received from electric power information-control apparatus which transmits/receives signal through another apparatus and network.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Layer: The insulating layer exists between the positive electrode and negative electrode. The insulating layer further contains insulating oxide chosen from alumina, silica, magnesia, titania, and zirconia. The insulating layer is separator (23), gel-like electrolyte and/or solid electrolyte.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The secondary battery further has an electrolyte solution. The electrolyte solution contains a nonaqueous solvent and an electrolytic salt. The electrolyte solution further contains at least one of aliphatic compound having two or more cyano groups in a molecule, and an aromatic compound having cyano group in a molecule, and cyclic carbonate derivative containing the halogen atom. The content of cyclic carbonate derivative is 0.01-30 %mass with respect to nonaqueous solvent. The cyclic carbonate derivative is chosen from 4-fluoro-1,3-dioxolan-2-one and 4,5-difluoro- 1,3-dioxolan-2-one.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The content of the polymer is 0.0001-5 %mass with respect to battery component containing the polymer. The separator has a multilayered structure formed by laminating 2 or more layers containing resin material in orthogonal direction with respect to positive electrode and negative electrode. The resin material is chosen from polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, aramid, polyamidoimide, polyamide, polyimide, polyether imide, and polyacrylonitrile. The separator includes 2 or more types of resin material chosen from polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, aramid, polyamidoimide, polyamide, polyimide, polyether imide, and polyacrylonitrile. The composition of the resin material changes in orthogonal direction with respect to the positive electrode and negative electrode. The open-circuit voltage in perfect charge condition per a pair of positive electrode and negative electrode is 4.25-6 V.