Abstract: Provided is an electrolyte solution capable of providing a lithium-sulfur secondary battery that has excellent cycle characteristics and that is less likely to generate gas. The electrolyte solution is intended to be used in a lithium-sulfur secondary battery that includes: a positive electrode containing a sulfur-containing electrode active material that includes at least one selected from the group consisting of simple sulfur, lithium polysulfide (Li2Sn: 1<n<8), an organic sulfur compound, and an inorganic sulfur compound; and a negative electrode containing a material that occludes and releases a lithium ion. The electrolyte solution contains a non-aqueous electrolyte and a solvent. The solvent contains an acyclic diether having a ?{?×P(?)} value, where ??0.01 (e/?2), falling within a range indicated by the formula (1) (i.e., 0<?{?×P(?)}<0.24; where ? represents a screening charge density and P(?) represents an ?-profile).

Abstract: An electrode mixture layer-forming composition for a lithium-sulfur secondary battery, said composition contains a carboxyl group-containing polymer or a salt thereof serving as a binder, a sulfur-based active material, a thickening agent, and water.

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode containing a composite of porous carbon and sulfur; and a nonaqueous electrolyte containing a nonaqueous solvent containing an unsaturated cyclic carbonate and a lithium salt, in which a cumulative 70% pore size of the porous carbon is 2.0 nm or more and 7.0 nm or less, a content of the unsaturated cyclic carbonate in the nonaqueous solvent is 10 vol % or more, and a positive electrode potential at an end-of-discharge voltage in normal use is 1.0 V vs. Li/Li+ or less.

Abstract: An electrode mixture layer-forming composition for a lithium-sulfur secondary battery, said composition contains a carboxyl group-containing polymer or a salt thereof serving as a binder, a carbon-sulfur composite in which sulfur is supported by pores of a porous carbon powder, a fibrous conducting aid, and water.

Abstract: Provided is a hydrogen storing alloy represented by the general formula: (RE1-a-bSmaMgb)(Ni1-c-dAlcMd)x (where 0.3<a<0.6; 0<b<0.16; 0.1<cx<0.2; 0?dx?0.1; 3.2<x<3.5; RE is at least one element selected from the group consisting of a rare earth element other than Sm, and Y, and essentially contains La; and M is Mn and/or Co). Also provided is a hydrogen storing alloy represented by the general formula: (RE1-a-bSmaMgb)(Ni1-c-dAlcMd)x (where 0.1<a<0.25; 0.1<b<0.2; 0.02<cx<0.2; 0?dx?0.1; 3.6<x<3.7; RE is at least one element selected from the group consisting of a rare earth element other than Sm, and Y, and essentially contains La; and M is Mn and/or Co). Further provided is a nickel-metal hydride rechargeable battery including a negative electrode containing the hydrogen storing alloy.

Abstract: This disclosure provides a hydrogen storing alloy and a production method thereof. The hydrogen storing alloy has a chemical composition of a general formula R(1-x)MgxNiy, wherein R is one or more elements selected from rare earth elements comprising Y, x satisfies 0.05?x?0.3, and y satisfies 2.8?y?3.8. The ratio of the maximal peak intensity present in a range of 2?=31°-33° to the maximal peak intensity present in a range of 2?=41°-44° is 0.1 or less (including 0), as measured by X-ray diffraction in which a Cu—K? ray is set as an X-ray source.

Abstract: This disclosure provides a hydrogen storing alloy and a production method thereof. The hydrogen storing alloy has a chemical composition of a general formula R(1-x)MgxNiy, wherein R is one or more elements selected from rare earth elements comprising Y, x satisfies 0.05?x?0.3, and y satisfies 2.8?y?3.8. The ratio of the maximal peak intensity present in a range of 2?=31°-33° to the maximal peak intensity present in a range of 2?=41°-44° is 0.1 or less (including 0), as measured by X-ray diffraction in which a Cu-K? ray is set as an X-ray source.

Abstract: A battery includes a cylindrical battery case and an electrode group including a positive electrode, a negative electrode, and a separator. The electrode group and the battery case define a space communicated from a top to a bottom, and one of the positive electrode and the negative electrode has a current collecting terminal that extends from the electrode group in a direction away from a center axis of the battery case and is in contact with a bottom surface of the battery case.

Abstract: A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

Abstract: A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

Abstract: An energy storage device including: a cylindrical case having at least one end closed; and an electrode assembly housed in the case. A reduced-diameter portion, at which an outer diameter of the case is reduced, is formed at the closed end of the case.

Abstract: A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

Abstract: A nickel-metal hydride storage battery includes a negative electrode containing a hydrogen storage alloy and an electrolyte solution. The hydrogen storage alloy has a CaCu5-type crystal structure and contains at least a Ni element and a rare earth element. The rare earth element is partly substituted with an Y element, and the electrolyte solution contains NaOH in an amount of 2.0 M or more.

Abstract: Provided is a hydrogen storing alloy represented by the general formula: (RE1-a-bSmaMgb)(Ni1-c-dAlcMd)x (where 0.3<a<0.6; 0<b<0.16; 0.1<cx<0.2; 0?dx?0.1; 3.2<x<3.5; RE is at least one element selected from the group consisting of a rare earth element other than Sm, and Y, and essentially contains La; and M is Mn and/or Co). Also provided is a hydrogen storing alloy represented by the general formula: (RE1-a-bSmaMgb)(Ni1-c-dAlcMd)x (where 0.1<a<0.25; 0.1<b<0.2; 0.02<cx<0.2; 0?dx?0.1; 3.6<x<3.7; RE is at least one element selected from the group consisting of a rare earth element other than Sm, and Y, and essentially contains La; and M is Mn and/or Co). Further provided is a nickel-metal hydride rechargeable battery including a negative electrode containing the hydrogen storing alloy.

Abstract: There is provided an energy storage device including: an electrode body; a lid portion; and a case main body having a body portion in a shape of a container which is open on one end side and for housing the electrode body inside itself and a sealing portion for surrounding and retaining the lid portion from an outer periphery on the opening side of the body portion, wherein an outside diameter of the sealing portion is smaller than an outside diameter of the body portion.

Abstract: An energy storage device including: a cylindrical case having at least one end closed; and an electrode assembly housed in the case. A reduced-diameter portion, at which an outer diameter of the case is reduced, is formed at the closed end of the case.

Abstract: A battery includes a cylindrical battery case and an electrode group including a positive electrode, a negative electrode, and a separator. The electrode group and the battery case define a space communicated from a top to a bottom, and one of the positive electrode and the negative electrode has a current collecting terminal that extends from the electrode group in a direction away from a center axis of the battery case and is in contact with a bottom surface of the battery case.

Abstract: A nickel-metal hydride storage battery includes a negative electrode containing a hydrogen storage alloy and an electrolyte solution. The hydrogen storage alloy has a CaCu5-type crystal structure and contains at least a Ni element and a rare earth element. The rare earth element is partly substituted with an Y element, and the electrolyte solution contains NaOH in an amount of 2.0 M or more.

Abstract: A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.

Abstract: An organic electroluminescent device, having an organic compound layer including two or more layers including at least a buffer layer and an emitting layer, wherein at least one of the organic compound layers other than the buffer layer contains at least one charge-transporting polyester represented by Formula (I-1) or (I-2), and the buffer layer is formed in contact with an anode and contains a crosslinked compound formed by using at least one charge injection material containing a substituted silicon group and represented by Formula (III).