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 at least a part of a surface of the negative electrode facing the positive electrode is coated with a compound including an aromatic ring to which two or more elements selected from the group consisting of N, S, and O are each independently bonded, and the electrolyte solution contains a lithium salt and a solvent represented by Formula (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. 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 at least a part of a surface of the negative electrode facing the positive electrode is coated with a compound including an aromatic ring in which two or more elements selected from the group consisting of N, S, and O are each independently bonded, and the electrolyte solution contains a lithium salt and at least one of a compound represented by Formula (1) or a compound represented by Formula (2).

Abstract: The present invention provides a lithium secondary battery having a high energy density. The present invention relates to a lithium secondary battery that a lithium metal deposits on a surface of a negative electrode and charge/discharge are performed by electrolytically dissolving the deposited lithium, in which the negative electrode essentially consists of an Mg alloy or an Mg metal.

Abstract: To provide a deterioration state estimation device capable of highly accurately estimating the deterioration state and the service life of a secondary battery whose negative electrode does not contain a negative electrode active material with a simple configuration.

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 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 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 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 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 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 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 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.

Abstract: A battery system, control device, and control method are provided that can improve the cycle service life.

Abstract: A lithium secondary battery is provided that has high energy density and excellent cycle characteristics. This lithium secondary battery includes: a positive electrode; a separator or a solid electrolyte; a negative electrode that is free of a negative electrode active material; and optionally, an electrolytic solution, wherein charging and discharging are performed by depositing lithium metal on the surface of the negative electrode and electrolytically dissolving the deposited lithium, and the lithium secondary battery includes an additive that inhibits anisotropic crystal growth of the lithium metal by being codeposited with the lithium metal during charging.

Abstract: The present invention provides a solid-state battery with high energy density and excellent cycle property, and a production method therefor. The production method for this solid-state battery, which contains a positive electrode, a solid electrolyte, and a negative electrode, comprises the steps of: preparing a negative electrode that is free of a negative-electrode active material; and forming, on at least one surface of the negative electrode, a solid electrolyte interface layer including a lithium-containing organic compound and a lithium-containing inorganic compound by immersing the negative electrode in a layer forming solution containing a lithium salt and a precursor and thereafter causing a reduction reaction on the surface of the negative electrode.

Abstract: It is an object of the present invention to provide a solid-state battery having high energy density and excellent cycle property. The solid-state battery comprises a positive electrode, a solid electrolyte, and a negative electrode that is free of a negative-electrode active material. The solid electrolyte has a solid polymer electrolyte layer, and a functional layer that has a surface facing at least the negative electrode and that suppresses the formation of dendrites on the surface of the negative electrode.