Abstract: According to an embodiment, there is provided an electrode including an active material-containing layer. A logarithmic differential pore volume distribution curve of the active material-containing layer by a mercury intrusion method includes first and second peaks. The first peak is a local maximum value in a range where a pore size is from 0.1 ?m or more to 0.5 ?m or less. The second peak is a local maximum value in a range where the pore size is from 0.5 ?m or more to 1.0 ?m or less. An intensity A1 of the first peak and an intensity A2 of the second peak satisfy 0.1?A2/A1?0.3. A density of the active material-containing layer is from 2.9 g/cm3 or more to 3.3 g/cm3 or less.

Abstract: According to one embodiment, provided is an electrode group including a stack that includes a positive electrode and a negative electrode. A first width of the positive electrode active material-containing layer of the positive electrode in a first direction is smaller than a second width of the negative electrode active material-containing layer of the negative electrode in the first direction. The electrode group has a wound structure where the stack is wound along the first direction. A length L corresponding to a difference between the second and first widths, a mass per unit area Ma of the negative electrode active material-containing layer, and a ratio p/n of a capacity p of the positive electrode to a capacity n of the negative electrode satisfy a relationship of 40 mg/m?(L×Ma)/(p/n)?60 mg/m.

Abstract: A nonaqueous electrolyte battery includes a container member, a positive electrode stored in the container member, a negative electrode stored in the container member, and a nonaqueous electrolyte stored in the container member. A gas composition in the container member satisfies, when a charge ratio of the nonaqueous electrolyte battery is set to 30% and the nonaqueous electrolyte battery is left stand at 35° C. for 24 hrs, 0.02 (cc/g)?VH2?0.1 (cc/g)??(1) 0.05?VC3H6/VCO?0.1??(2) 1?VCO/VH2?9??(3).

Abstract: According to an embodiment, there is provided an electrode including an active material-containing layer. A logarithmic differential pore volume distribution curve of the active material-containing layer by a mercury intrusion method includes first and second peaks. The first peak is a local maximum value in a range where a pore size is from 0.1 ?m or more to 0.5 ?m or less. The second peak is a local maximum value in a range where the pore size is from 0.5 ?m or more to 1.0 ?m or less. An intensity A1 of the first peak and an intensity A2 of the second peak satisfy 0.1?A2/A1?0.3. A density of the active material-containing layer is from 2.9 g/cm3 or more to 3.3 g/cm3 or less.

Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a negative electrode and a nonaqueous electrolyte. The negative electrode includes a negative electrode active material and a binder. The negative electrode active material contains monoclinic titanium dioxide or Li4+aTi5O12 (here, ?0.5?a?3). The binder includes polyvinylidene fluoride with a molecular weight of 400,000 to 1,000,000. The negative electrode satisfies a formula (I) below. The nonaqueous electrolyte contains at least one of difluorophosphate and monofluorophosphate. 0.1?(P2/P1)?0.

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a container member, a positive electrode stored in the container member, a negative electrode stored in the container member, and a nonaqueous electrolyte stored in the container member. A gas composition in the container member when a charge ratio of the nonaqueous electrolyte battery is set to 30%, and the nonaqueous electrolyte battery is left stand at 35° C. for 24 hrs satisfies 0.02(cc/g)?VH2?0.01(cc/g) ??(1) 0.05?VC3H6VCO?0.

Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a negative electrode and a nonaqueous electrolyte. The negative electrode includes a negative electrode active material and a binder. The negative electrode active material contains monoclinic titanium dioxide or Li4+aTi5O12 (here, ?0.5?a?3). The binder includes polyvinylidene fluoride with a molecular weight of 400,000 to 1,000,000. The negative electrode satisfies a formula (I) below. The nonaqueous electrolyte contains at least one of difluorophosphate and monofluorophosphate. 0.1?(P2/P1)?0.