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 including particles of a composite oxide having an orthorhombic crystal structure and represented by the general formula Li2+wNa2?xM1yTi6?zM2zO14??. The particles of the composite oxide have an average crystallite size of 50 nm to 90 nm and an average primary particle size of 0.1 ?m to 0.6 ?m. M1 is at least one selected from the group consisting of Cs and K. M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Y, Co, Mn, and Al. w falls within 0?w?4, x falls within 0<x<2, y falls within 0?y<2, z falls within 0<z<6, and ? falls within ?0.5???0.5.

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is 0.70 or more in 100 primary particles among the plurality of primary particles.

Abstract: According to one embodiment, an electrode is provided. An average particle size L1 of the primary particles of the active material and an average particle size L2 of primary particles of the carbon particles satisfy the following formula (1). L1/100?L2?L1/10??(1) A covering ratio of the active material by the carbon particles is not less than 80%. The covering ratio is a ratio of a mapping area of the carbon particles to a mapping area of the active material on a mapping image of a section of the active material-containing layer by Raman spectroscopy.

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average crystallite diameter of the plurality of primary particles is 90 nm or more. The average particle size (D50) of the plurality of primary particles is in a range of 0.1 ?m to 5 ?m. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is less than 0.70 in 100 primary particles among the plurality of primary particles.

Abstract: According to one embodiment, a secondary battery includes a positive electrode, a negative electrode and an aqueous electrolyte. The negative electrode includes a titanium-containing oxide. The aqueous electrolyte includes a sodium ion having a concentration of 3 mol/L or more and at least one type of first anion selected from the group consisting of [N(FSO2)2]?, SO32?, S2O32? and SCN?.

Abstract: According to one embodiment, an active material is provided. The active material includes a lithium niobium composite oxide represented by a general formula LixFe1?yM1yNb11?2M2zO29 (1) and having an orthorhombic crystal structure. In the general formula (1), 0?x?23, 0?y?1 and 0<z?6 are satisfied. Each of M1 and M2 independently includes at least one element selected from a group consisting of Fe, Mg, Al, Cu, Mn, Co, Ni, Zn, Sn, Ti, Ta, V, and Mo.

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode. The negative electrode includes an active material composite. The active material composite includes active material particles and a layer covering at least a portion of surfaces of the active material particles. The active material particles include titanium-containing oxide particles. The layer contains N and Si. The layer includes a first surface facing the at least the portion of surfaces of the active material particles and a second surface defining a layer thickness from the first surface. An N concentration in the layer decreases from the first surface to the second surface. A Si concentration in the layer increases from the first surface to the second surface.

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: According to one embodiment, there is provided an active substance. The active substance contains active material particles. The active material particles comprise a compound represented by the formula: Ti1-xM1xNb2-yM2yO7. The active material particles has a peak A attributed to a (110) plane which appears at 2? ranging from 23.74 to 24.14°, a peak B attributed to a (003) plane which appears at 2? ranging from 25.81 to 26.21° and a peak C attributed to a (602) plane which appears at 2? ranging from 26.14 to 26.54° in an X-ray diffraction pattern of the active material particles. An intensity IA of the peak A, an intensity IB of the peak B, and an intensity IC of the peak C satisfy the relation (1): 0.80?IB/IA?1.12; and the relation (2) IC/IB?0.80.

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, a secondary battery is provided. The secondary battery includes a negative electrode including a negative electrode current collector, a negative electrode terminal electrically connected to the negative electrode current collector, a joint electrically connecting the negative electrode terminal and the negative electrode current collector, and a water repellent layer covering the joint. The joint is covered with the inner surface of the water repellent layer. A contact angle ? with respect to water on an outer surface of the water repellent layer satisfies 80°??.

Abstract: According to one embodiment, a nonaqueous electrolyte battery including a negative electrode that includes a negative electrode current collector and a negative electrode mixed-materials layer is provided. The negative electrode mixed-materials layer includes a titanium-including metal oxide particle that includes a phase including a carbon material on a surface and a binder that includes an acrylic resin. The negative electrode satisfies Equation (I): ?/?>6??(I) ? is a peel strength (kN/m) between the negative electrode current collector and the negative electrode mixed-materials layer, and ? is a cutting strength (kN/m) in the negative electrode mixed-materials layer.

Abstract: A vehicle containing an nonaqueous electrolyte battery, the nonaqueous electrolyte battery including: a negative electrode containing a negative electrode active material; a positive electrode; and a nonaqueous electrolyte, where the negative electrode active material contains a composite oxide of formula: Lix(Nb1-yTay)2-zTi1+0.5zM0.5zO7, where 0?x?5, 0?y?1, and 0.4?z?1, and M is at least one metal element selected from Mo and W.

Abstract: According to one embodiment, an active material is provided. The active material includes particles. The particles have a crystal structure belonging to a monoclinic niobium-titanium composite oxide. A ratio of a crystallite size Dc corresponding to a (020) plane with respect to an average primary particle size Dp of the particles is not less than 35%.

Abstract: According to one embodiment, an active material containing a niobium-titanium composite oxide and Cu is provided.

Abstract: According to one embodiment, there is provided an active material including monoclinic niobium titanium composite oxide particles and a carbon material layer. The monoclinic niobium titanium composite oxide particles can absorb and release Li ions or Na ions and satisfy Formula (1) below. The carbon material layer covers at least a part of surfaces of the niobium titanium composite oxide particles and satisfies Formula (2) below: 0.5?(?/?)?2??(1) 0?(?/?)?0.

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte including a water-containing solvent and a lithium ion. The negative electrode includes an aluminum-containing negative electrode current collector and a boehmite-containing cover layer, and the boehmite-containing cover layer is provided on at least a part of a surface of the negative electrode current collector, and has a thickness of 10 nm to 1000 nm.

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 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.