Abstract: The present invention provides a lithium secondary battery having a high energy density and excellent cycle characteristics and productivity, a method for manufacturing the lithium secondary battery, and the like. The present invention relates to a lithium secondary battery (and its associated methods) including a positive electrode, and a negative electrode which does not have a negative electrode active material, in which the positive electrode contains a positive electrode active material and a lithium-containing compound represented by Li6MnxCo1-xO4 (0<x<1).

Abstract: The present invention provides a lithium secondary battery with excellent energy efficiency per unit volume and unit weight. A lithium secondary battery according to an embodiment includes a positive electrode, a negative electrode which does not have a negative electrode active material, and a separator which is arranged between the positive electrode and the negative electrode. At least a part of an edge of the negative electrode, and an edge of the separator corresponding to the part of the edge of the negative electrode are arranged at the same position in a plane view.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic. The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode not having a negative-electrode active material, and an electrolyte solution, in which the electrolyte solution contains a lithium salt and a cyclic fluorine compound having a cyclic hydrocarbon skeleton in which at least one hydrogen atom is substituted with a fluorine atom.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic. The present invention provides a lithium secondary battery including: a positive electrode; a separator; a negative electrode that is free of a negative electrode active material; and an electrolytic solution, in which the electrolytic solution contains a fluorine solvent represented by Chemical Formulae (1) to (4). (In the formulae, each of R10 and R20 independently represents any of a C1 to C8 alkyl group, a cycloalkyl group, an aryl group, a C1 to C8 alkyl group that is fully or partially fluorinated, a cycloalkyl group that is fully or partially fluorinated, or an aryl group that is fully or partially fluorinated.

Abstract: The purpose of the present invention is to provide a lithium secondary battery which has a high energy density and an excellent cycle characteristic and is suppressed from a volumetric change of a cell due to charge/discharge. The present invention relates to a lithium secondary battery having a positive electrode, a negative electrode not having a negative-electrode active material, a separator or a solid electrolyte placed between the positive electrode and the negative electrode, and a fibrous or porous buffering function layer formed on the surface of the separator or the solid electrolyte facing the negative electrode, the buffering function layer having ionic conductivity and electronic conductivity.

Abstract: An object of the present invention is to provide a lithium secondary battery having a high energy density and excellent in cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode not having a negative-electrode active material, a separator placed between the positive electrode and the negative electrode, a carbon metal composite layer formed on a surface of the negative electrode facing the separator, and a conductive thin film formed on a surface of the separator facing the negative electrode, in which the carbon metal composite layer includes a plurality of fibrous carbon materials, each of which are randomly oriented.

Abstract: The purpose of the present invention is to provide a method of manufacturing a lithium secondary battery having a high energy density. The method of manufacturing a lithium secondary battery having a positive electrode, a negative electrode not having a negative-electrode active material, and a separator includes a step of applying a gel electrolyte to one of the surfaces of the separator and a step of forming the negative electrode on the surface of the gel electrolyte, wherein the negative electrode is thinner than the gel electrolyte.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic. The present invention relates to a lithium secondary battery having a positive electrode and a negative electrode not having a negative electrode active material, wherein the lithium secondary battery contains a compound having a 1,3,5-triazine ring skeleton.

Abstract: The purpose of the present invention is to provide a battery system particularly excellent in cycle characteristics. A battery system according to one embodiment is configured to include a lithium secondary battery and a charging device which charges the lithium secondary battery. The lithium secondary battery includes a positive electrode and a negative electrode not having a negative electrode active material. The charging device includes a power supply unit which supplies power for charging to the lithium secondary battery, and a charge control unit which controls the power supply unit so as to, after precharge to charge up to a predetermined precharge capacity by a predetermined precharge current, perform normal charge performing charging up to a normal capacity larger than the precharge capacity by a predetermined normal charge current higher than the precharge current. The precharge is performed before each of the repeated normal charges.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic. The present invention relates to a lithium secondary battery having a positive electrode, a separator, a negative electrode not having a negative electrode active material, and an electrolyte solution, in which the electrolyte solution contains, as a solvent, at least any one of compounds represented by Formulae (1) to (4).

Abstract: It is an object of the present invention to accurately estimate the state of deterioration and service life of a secondary battery having a negative electrode free of a negative electrode active material using a simple configuration.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having an excellent cycle characteristic. A lithium secondary battery according to an embodiment includes a positive electrode, and a negative electrode not having a negative electrode active material. The negative electrode is configured as Cu having a surface roughness maximum height Rz of 1.0 µm or less and an orientation plane of a plane.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic. The present invention relates to a lithium secondary battery having a positive electrode and a negative electrode not having a negative electrode active material, wherein at least a part of a surface of the negative electrode facing the positive electrode is coated with a compound containing an aromatic ring to which two or more elements selected from the group consisting of N, S, and O are each independently bonded.

Abstract: The present invention provides a lithium secondary battery that has high energy density and excellent cycle characteristics. The present invention provides a lithium secondary battery including: a positive electrode; a separator; a negative electrode that is free of a negative electrode active material; and an electrolytic solution, in which the electrolytic solution contains one or more fluorine solvents selected from ether compounds represented by Chemical Formulae (A) to (D).

Abstract: The present invention provides a lithium secondary battery that has high energy density and excellent cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode, a separator, a negative electrode that is free of a negative electrode active material, and an electrolytic solution, in which the electrolytic solution contains, as a solvent, a compound having at least one of a monovalent group represented by Formula (A) or a monovalent group represented by Formula (B).

Abstract: The present invention provides a lithium secondary battery that has high energy density and excellent cycle characteristics or safety. The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode that is free of a negative electrode active material, and an electrolytic solution, in which the electrolytic solution contains a lithium salt, a fluorine compound having a monovalent group represented by Formula (A) or Formula (B), and a chain-like ether compound that is free of a fluorine atom and has a branched chain.

Abstract: The present invention provides a lithium secondary battery that has high energy density and capacity and has excellent cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode current collector, a negative electrode that is free of a negative electrode active material, a separator that is disposed between the positive electrode current collector and the negative electrode, a positive electrode that is disposed between the positive electrode current collector and the separator and contains a positive electrode active material, and electrolytic solution, wherein the lithium secondary battery includes a layer containing an anion-absorbing conductive polymer between the positive electrode current collector and the separator.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic. The present invention relates to a lithium secondary battery equipped with a positive electrode, a negative electrode not having a negative electrode active material, a separator placed therebetween, and a fibrous or porous buffering function layer formed on the surface of the separator facing the negative electrode and having ionic conductivity. The positive electrode contains a positive electrode active material and a lithium-containing compound which causes an oxidation reaction and does not substantially cause a reduction reaction in a charge/discharge potential range of the positive electrode active material. In a particle size distribution by the laser diffraction method, the lithium-containing compound has a particle size D50 (S), which corresponds to a cumulative degree at 50%, of 1.

Abstract: The purpose of the present invention is to provide a lithium secondary battery having a high energy density and an excellent cycle characteristic.

Abstract: The purpose of the invention is to provide an information processing device including a first reception unit which receives from a plurality of secondary battery management systems, charge/discharge data of secondary batteries managed by the secondary battery management systems, and an estimation model generation unit which generates an estimation model for estimating a degradation indicator indicating a state of degradation of the secondary battery based on the charge/discharge data.