Abstract: According to one embodiment, an active material is provided. This active material includes active material particles each allowing lithium to be inserted thereinto and extracted therefrom in the range of 0.5 V to 2V (vs. Li+/Li), and carbon material layers at least partially coating the active material particles. The active material has a BET specific surface area S of 2 m2/g to 20 m2/g in accordance with a nitrogen adsorption method. Between the BET specific surface area S and the proportion M (mass %) of the mass of the carbon material layers to the total mass of the active material particles and carbon material layers, the ratio of S/M (m2/g) meets 0.5?S/M?5.

Abstract: According to one embodiment, an active material is provided. The active material includes active material particles. The active material particle includes a core particle and a shell layer which covers at least a part of a surface of the core particle. The core particle contains a monoclinic or orthorhombic niobium-titanium composite oxide. The shell layer contains a compound which is at least one compound selected from the group consisting of a lithium-titanium composite oxide, an Nb-containing lithium-titanium composite oxide, a lithium-niobium composite oxide, a lithium phosphate, and an Nb-containing lithium phosphate. The compound has a composition different from that of the monoclinic or orthorhombic niobium-titanium composite oxide.

Abstract: According to one embodiment, there is provided a battery module. The battery module includes five nonaqueous electrolyte batteries electrically connected in series. The five nonaqueous electrolyte batteries each include a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode includes an active material including a titanium-including composite oxide. The titanium-including composite oxide includes Na and a metal element M within a crystal structure. The metal element M is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al.

Abstract: In general, according to one embodiment, there is provided an active material. The active material contains active material primary particles of a monoclinic niobium-titanium composite oxide. The monoclinic niobium-titanium composite oxide contains at least one element selected from the group consisting of Mo, V, and W. A content of the at least one element in the monoclinic niobium-titanium composite oxide is within a range of 0.01 atm % or more and 2 atm % or less. Each of the active material primary particles has an aspect ratio within a range of 1 or more and less than 4 of a primary particle and a crystallite size within a range of 5 nm or more and 90 nm or less.

Abstract: In general, according to one embodiment, there is provided an electrode. The electrode includes a current collector, a first electrode mixture layer formed on the current collector, and a second electrode mixture layer formed on the first electrode mixture layer. The first electrode mixture layer contains a niobium-titanium composite oxide that has a monoclinic crystal structure. The second electrode mixture layer contains a lithium titanate that has a spinel-type crystal structure.

Abstract: According to an embodiment, a method of manufacturing an active material is provided. The active material includes particles of a composite oxide of the general formula Ti1±xNb2±yMzO7?? and a carbon-including phase. Here, 0?x?0.15, 0?y?0.3, 0.01<z?0.2, and 0<?<0.3. M is at least one of Mg, Fe, Ni, Co, W, Ta, and Mo. The manufacturing method includes preparing a mixture by mixing in a liquid, a compound including Ti, a compound including Nb, a carbon source, and a compound including an element M, obtaining a precursor from the mixture, and calcining the precursor. The calcination is performed in a mixed atmosphere including nitrogen and oxygen, or argon and oxygen, with an oxygen concentration of 5% to 15%.

Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2?xM1yTi6?zM2zO14+?. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0?w?4, x is within a range of 0<x<2, y is within a range of 0?y<2, z is within a range of 0<z?6, and ? is within a range of ?0.5???0.5.

Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a a niobium composite oxide. The niobium composite oxide is represented by a general formula of LixM(1-y)NbyNb2O(7+?). In the general formula, M is at least one selected from the group consisting of Ti and Zr, and x, y and ? satisfy 0?x?6, 0?y?1, and ?1???1, respectively. The niobium composite oxide contains nitrogen atoms in a content of 0.01% to 3.02% by mass.

Abstract: According to one embodiment, an active material containing a monoclinic oxide is provided. The monoclinic oxide is represented by the formula LixTiNb2O7 (0?x?5). A unit cell volume of the monoclinic oxide is 795 ?3 or more.

Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of LixM11?yM2yTi6?zM3zO14+?. In the general formula, M1 is at least one selected from the group consisting of Sr, Ba, Ca, and Mg; M2 is at least one selected from the group consisting of Cs, K, and Na; M3 is at least one selected from the group consisting of Al, Fe, Zr, Sn, V, Nb, Ta, and Mo; and x is within a range of 2?x?6, y is within a range of 0<y<1, z is within a range of 0<z?6, and ? is within a range of ?0.5???0.5.

Abstract: According to one embodiment, there is provided an active material. The active material contains a composite oxide represented by the following general: a general formula Lix(Nb1-yTay)2+0.5zTi1-zM0.5zO7 (0?x?5, 0?y?1, and 0<z?1). In this formula, M is at least one metal element selected from the group consisting of Sc, Y, V, Cr, Fe, Co, Mn, Al, and Ga.

Abstract: According to one embodiment, there is provided an active material. The active material includes particles. Each of the particles includes a core phase and a shell phase surrounding at least a part of the core phase. The core phase includes a first monoclinic niobium-titanium composite oxide. The shell phase includes a second monoclinic niobium-titanium composite oxide. An oxidation number of titanium in the core phase is larger than an oxidation number of titanium in the shell phase, and/or an oxidation number of niobium in the core phase is larger than an oxidation number of niobium in the shell phase.

Abstract: In general, according to one embodiment, the active material for a battery contains a niobium composite oxide represented by the formula: LixM(1?y)NbyNb2O(7+?). M represents at least one kind selected from the group consisting of Ti and Zr. X, y, and ? are numbers respectively satisfying the following: 0?x?6, 0?y?1, and ?1???1.

Abstract: According to one embodiment, there is provided a composite. The composite includes a graphene sheet material, active material particles, and a carbon layer located between the graphene sheet material and the active material particles. The graphene sheet material includes at least one of a planar graphene sheet of a monoatomic layer and a laminate of 10 layers or less of the planar graphene sheets. The active material particles include a titanium-niobium composite oxide. The carbon layer includes a carbon material having a n-electron system.

Abstract: In general, according to one embodiment, the active material for a battery contains a niobium composite oxide represented by the formula: LixM(1-y)NbyNb2O(7+?). M represents at least one kind selected from the group consisting of Ti and Zr. X, y, and ? are numbers respectively satisfying the following: 0?x?6, 0?y?1, and ?1???1). The pH of the active material for a battery is from 7.4 to 12.5.

Abstract: According to one embodiment, there is provided an active material includes monoclinic niobium-titanium composite oxide particles. The monoclinic niobium-titanium composite oxide particles contain a rutile type oxide.

Abstract: According to one embodiment, there is provided an active material. The active material contains a composite oxide represented by a following general formula: Lix(Nb1-yTay)2-zTi1+0.5zM0.5zO7,??the general formula: in which 0?x?5, 0?y?1, and 0<z?1, and M is at least one metal element selected from the group consisting of Mo and W.

Abstract: According to one embodiment, there is provided an active material. The active material contains a composite oxide represented by the following general: a general formula Lix(Nb1?yTay)2+0.5zTi1?zM0.5zO7 (0?x?5, 0?y?1, and 0<z?1). In this formula, M is at least one metal element selected from the group consisting of Sc, Y, V, Cr, Fe, Co, Mn, Al, and Ga.

Abstract: A production method of a battery active material of the present embodiment includes a step of obtaining a coprecipitated product containing Ti and Nb by mixing a solution with a pH of 5 or lower, in which a Ti compound is dissolved, and a solution with a pH of 5 or lower, in which a Nb compound is dissolved, such that molar ratio of Ti and Nb (Nb/Ti) is adjusted within a range of 1?Nb/Ti?28, and then further mixing with an alkali solution with a pH of 8 or higher; and a step of burning the coprecipitated product under condition of 635° C. or higher and 1200° C. or lower.

Abstract: According to one embodiment, there is provided an active substance. The active substance includes secondary particles and a carbon material phase formed on at least a part of a surface of each of the secondary particles. Each of the secondary particles is constructed by aggregated primary particles of an active material. The primary particles of the active material includes a niobium composite oxide represented by LixM(1-y)NbyNb2O(7+?), wherein M is at least one selected from the group consisting of Ti and Zr, and x, y, and ? respectively satisfy 0?x?6, 0?y?1, and ?1???1. The secondary particles have a compression fracture strength of 10 MPa or more.