Abstract: The purpose of the present invention is to provide a nonaqueous electrolyte that contains acetonitrile having an excellent balance between viscosity and the dielectric constant and a fluorine-containing inorganic lithium salt, wherein the generation of complex cations comprising a transition metal and acetonitrile is suppressed, excellent load characteristics are exhibited, and increases in internal resistance upon repeated charge/discharge cycles are suppressed; a further purpose of the present invention is to provide a nonaqueous secondary battery. The present invention relates to a nonaqueous electrolyte which contains: a nonaqueous solvent comprising acetonitrile; a fluorine-containing inorganic lithium salt; and a specific nitrogenous cyclic compound typified by benzotriazole.

Abstract: The purpose of the present invention is to provide a nonaqueous electrolyte that contains acetonitrile having excellent balance between viscosity and the dielectric constant and a fluorine-containing inorganic lithium salt, wherein the generation of complex cations comprising a transition metal and acetonitrile is suppressed, excellent load characteristics are exhibited, and self-discharge during high-temperature storage is suppressed; a further purpose of the present invention is to provide a nonaqueous secondary battery. The present invention relates to a nonaqueous electrolyte which contains: a nonaqueous solvent comprising 30 to 100 vol % of acetonitrile; a fluorine-containing inorganic lithium salt; and a specific nitrogenous cyclic compound typified by pyridine.

Abstract: Provided are a non-aqueous electrolyte battery that exhibits favorable load characteristics at low temperatures after being stored at a high temperature, and a method for manufacturing the non-aqueous electrolyte battery. A non-aqueous electrolyte battery of the present invention includes a negative electrode, a positive electrode, and a non-aqueous electrolyte.

Abstract: An electrode active material includes particles of a lithium-containing composite oxide represented by the general compositional formula: Li1+xMO2, where ?0.15?x?0.15, and M represents an element group of three or more elements including at least Ni, Co and Mn, wherein the ratios of Ni, Co and Mn to the total elements constituting M satisfy 45?a?90, 5?b?30, 5?c?30 and 10?b+c?55, where the ratios of Ni, Co and Mn are represented by a, b and c, respectively, in units of mol %, the average valence A of Ni in the whole particles is 2.2 to 3.2, the valence B of Ni on the surface of the particles has the relationship: B<A, the average valence C of Co in the whole particles is 2.5 to 3.2, the valence D of Co on the surface of the particles has the relationship: D<C, and the average valence of Mn in the whole particles is 3.5 to 4.2.

Abstract: The purpose of the present invention is to provide a nonaqueous electrolyte that contains acetonitrile having excellent balance between viscosity and the dielectric constant and a fluorine-containing inorganic lithium salt, wherein the generation of complex cations comprising a transition metal and acetonitrile is suppressed, excellent load characteristics are exhibited, and self-discharge during high-temperature storage is suppressed; a further purpose of the present invention is to provide a nonaqueous secondary battery. The present invention relates to a nonaqueous electrolyte which contains: a nonaqueous solvent comprising 30 to 100 vol % of acetonitrile; a fluorine-containing inorganic lithium salt; and a specific nitrogenous cyclic compound typified by pyridine.

Abstract: The purpose of the present invention is to provide a nonaqueous electrolyte that contains acetonitrile having an excellent balance between viscosity and the dielectric constant and a fluorine-containing inorganic lithium salt, wherein the generation of complex cations comprising a transition metal and acetonitrile is suppressed, excellent load characteristics are exhibited, and increases in internal resistance upon repeated charge/discharge cycles are suppressed; a further purpose of the present invention is to provide a nonaqueous secondary battery. The present invention relates to a nonaqueous electrolyte which contains: a nonaqueous solvent comprising acetonitrile; a fluorine-containing inorganic lithium salt; and a specific nitrogenous cyclic compound typified by benzotriazole.

Abstract: Provided are: an electric storage device having improved reliability in charging a storage battery; and a charging method. This electric storage device is provided with: an SOC calculation section which calculates a charge rate when a battery voltage reached a predetermined value, in the cases where the battery voltage reached the predetermined value when a lithium ion storage battery is being charged; a voltage difference calculation section, which calculates a battery voltage difference corresponding to a difference between the charge rate and a charge rate at which lithium is deposited; a charge complete voltage calculation means, which calculates a charge complete voltage by adding the voltage difference to the battery voltage obtained when the battery voltage reached the predetermined value; and a charge control means, which completes the charging of the lithium ion storage battery in the cases where the battery voltage reached the charge complete voltage.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, wherein the positive electrode includes a positive electrode current collector and a positive electrode material mixture layer formed on one or both sides of the positive electrode current collector, the positive electrode material mixture layer has a thickness greater than 80 ?m per side of the positive electrode current collector, the positive electrode material mixture layer includes a positive electrode active material, the positive electrode active material is composed of secondary particles formed by aggregation of primary particles, the secondary particles have an average particle size of 6 ?m or less, and, when diffraction-line integrated intensities of the (003) plane and the (104) plane in an X-ray diffraction chart of the positive electrode material mixture layer are I003 and I104, respectively, the ratio I003/I104 of the integrated intensities is 1.

Abstract: A lithium ion secondary battery containing a negative electrode active material containing Si and O as constituent elements and exhibiting excellent charge-discharge cycle characteristics. The lithium ion secondary battery has a positive electrode having a positive electrode material mixture layer, a negative electrode, a separator and a nonaqueous electrolyte containing at least an electrolyte salt and an organic solvent, where the negative electrode has a negative electrode material mixture layer containing a negative electrode active material containing Si and O as constituent elements (the atomic ratio x of O to Si is 0.5?x?1.5). The nonaqueous electrolyte contains the electrolyte salt at a concentration exceeding a concentration at which conductivity in the nonaqueous electrolyte containing the electrolyte salt and the organic solvent is maximized, and the conductivity at 25° C. is 6.5 to 16 mS/cm.

Abstract: A positive electrode material that can form a positive electrode mixture containing composition with reduced changes over time and high productivity, a manufacturing method thereof, a non-aqueous rechargeable battery less likely to swell and having a high storage characteristic during storage at high temperatures, and a positive electrode that can form the battery are provided. The object is solved by providing a positive electrode material having a coating layer of an organic silane compound on a surface of a positive electrode active material made of a lithium nickel composite oxide represented by the general compositional formula (1): Li1+xMO2 where ?0.5?x?0.5, M represents a group of at least two elements including at least one of Mn and Co and Ni, and 20?a<100 and 50?a+b+c?100 when the ratios (mol %) of Ni, Mn, and Co in the elements forming M are a, b, and c, respectively.

Abstract: Provided are: an electric storage device having improved reliability in charging a storage battery; and a charging method. This electric storage device is provided with: an SOC calculation section which calculates a charge rate when a battery voltage reached a predetermined value, in the cases where the battery voltage reached the predetermined value when a lithium ion storage battery is being charged; a voltage difference calculation section, which calculates a battery voltage difference corresponding to a difference between the charge rate and a charge rate at which lithium is deposited; a charge complete voltage calculation means, which calculates a charge complete voltage by adding the voltage difference to the battery voltage obtained when the battery voltage reached the predetermined value; and a charge control means, which completes the charging of the lithium ion storage battery in the cases where the battery voltage reached the charge complete voltage.

Abstract: A nonaqueous electrolyte battery of the present invention includes a positive electrode having a positive active material capable of intercalating and deintercalating a lithium ion, a negative electrode having a negative active material capable of intercalating and deintercalating a lithium ion, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The heat generation starting temperature of the positive electrode is 180° C. or higher. The separator includes heat-resistant fine particles and a thermoplastic resin. The proportion of particles with a particle size of 0.2 ?m or less in the heat-resistant fine particles is 10 vol % or less and the proportion of particles with a particle size of 2 ?m or more in the heat-resistant fine particles is 10 vol % or less. The separator effects a shutdown in the range of 100° C. to 150° C.

Abstract: The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte and a separator. The positive electrode includes a positive electrode mixture layer containing a positive electrode active material, a conductive polymer, an organic silane compound, a conductive assistant and a binder, the conductive polymer is polythiophene or a derivative thereof, and the content of the conductive polymer is 0.05 to 0.5 mass % with respect to the total mass of the positive electrode mixture layer.

Abstract: Provided is a positive electrode for a lithium ion secondary battery including, as a positive active material, a positive active material (A) that is LiFePO4 having an olivine structure and a positive active material (B) expressed by a general formula: yLi2MnO3.(1?y)LiMO2 (y satisfies 0.3?y?0.7, and M represents at least two kinds of elements selected from the group consisting of Co, Mn, Ni, Fe, and Ti so that a total valence becomes three, the positive active material (A) having a mass ratio of 80 to 90% by mass with respect to the total mass of the positive active material (A) and the positive active material (B); a lithium ion secondary battery including the positive electrode; and a battery system including the lithium ion secondary battery and a charge and discharge control portion for controlling the charge and discharge of the lithium ion secondary battery with a voltage.

Abstract: The lithium-ion secondary battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. A positive electrode material mixture layer of the positive electrode has a volume density Vc of 62 vol. % or more and a capacity per unit area of 2 mAh/cm2 or more, the positive electrode satisfies C2/Vc?200 [C (mAh/g): initial charge capacity per 1 g of positive electrode active material]. A negative electrode material mixture layer of the negative electrode has a volume density Va of 62 vol. % or more and a capacity per unit area of 2.5 mAh/cm2 or more, the negative electrode satisfies A2/Va?1700 [A (mAh/g): initial discharge capacity per 1 g of negative electrode active material]. The separator has an air permeance of 200 sec./100 mL or less, the air permeance being determined by the Gurley method, the separator satisfies d/(A2/Va)?0.039 [d (nm): average pore size of the separator]. The positive electrode and the negative electrode satisfy (A2/Va)/(C2/Vc)?30.

Abstract: The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte and a separator. The positive electrode includes a positive electrode mixture layer containing a positive electrode active material, a conductive polymer, an organic silane compound, a conductive assistant and a binder, the conductive polymer is polythiophene or a derivative thereof, and the content of the conductive polymer is 0.05 to 0.5 mass % with respect to the total mass of the positive electrode mixture layer.

Abstract: It is an object of the present invention to provide a nonaqueous electrolyte battery in which a winding body is uniformly expanded, to thereby prevent undulation. A nonaqueous electrolyte battery (1) comprises a winding body (30) having a flattened shape, in which a positive electrode (31) and a negative electrode (32) are wound with separators (33, 34) interposed therebetween, and a negative electrode tab (36) joined to the negative electrode (32), extending in a winding axis direction of the winding body (30).

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, wherein the positive electrode includes a positive electrode current collector and a positive electrode material mixture layer formed on one or both sides of the positive electrode current collector, the positive electrode material mixture layer has a thickness greater than 80 ?m per side of the positive electrode current collector, the positive electrode material mixture layer includes a positive electrode active material, the positive electrode active material is composed of secondary particles formed by aggregation of primary particles, the secondary particles have an average particle size of 6 ?m or less, and, when diffraction-line integrated intensities of the (003) plane and the (104) plane in an X-ray diffraction chart of the positive electrode material mixture layer are I003 and I104, respectively, the ratio I003/I104 of the integrated intensities is 1.

Abstract: A non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a separator and a non-aqueous electrolyte. The positive electrode includes a lithium-containing composite oxide as a positive electrode active material, expressed by a general compositional formula (1): Li1+yMO2 where ?0.5?y?0.5. M denotes an element group including Ni and at least one element selected from the group consisting of Co, Mn, Fe and Ti. And the non-aqueous electrolyte includes a cycloalkane derivative A having at least one alkyl ether group containing an unsaturated bond, and at least one compound selected from the group consisting of an azacrown ether compound B having a functional group where at least one of nitrogen atoms contains an unsaturated bond and a nitrogen-containing heterocyclic compound C.

Abstract: The electrode for a lithium-ion secondary battery of the present invention includes an electrode mixture layer including metal oxide particles having a scaly shape and a new Mohs hardness of 9.0 or more, active material particles capable of intercalating and deintercalating Li, and a resin binder. Further, the lithium-ion secondary battery of the present invention includes a positive electrode, a negative electrode, a nonaqueous electrolyte, and a separator. The positive electrode and/or the negative electrode is the electrode for a lithium-secondary battery of the present invention.