Abstract: According to an embodiment, a coating head includes a head main body, a first manifold, a first slit, a second manifold, and a second slit. Inside the head main body, the first slit is formed adjacent to the first manifold on a front side, and the second manifold is formed adjacent to the first slit on the front side. The second slit is formed adjacent to the second manifold on the front side, and forms an ejection port to eject a coating liquid from the second manifold to the outside. A dimension of the second slit along a height direction intersecting a front-back direction is larger than that of the first slit along the height direction.

Abstract: According to one embodiment, there is provided a laminate including a first current collector, a first current collector tab, a first active material-containing layer, and a first film containing an inorganic material. A back surface of the first active material-containing layer is supported on at least a part among front and back surfaces of the first current collector. A first thickness at a first end surface of the first active material-containing layer is smaller than a second thickness at a second end surface facing reverse with respect to the first end surface. The first film covers at least the first end surface of the first active material-containing layer and a portion among front and back surfaces of the first current collector tab adjacent to the first end surface.

Abstract: According to one embodiment, a battery is provided. The battery includes a positive electrode, and a negative electrode including a negative electrode active material-containing layer including a niobium-titanium composite oxide and a conductive agent that includes a carbon material. The negative electrode active material-containing layer includes a principal surface facing the positive electrode. Assuming that the thickness of the negative electrode active material-containing layer is A, a ratio (C2/C1) of carbon content ratio C2 at a depth of 0.5 A from the principal surface to carbon content ratio C1 at a depth of 1 ?m from the principal surface satisfies 2?C2/C1?30.

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer includes active material particles, a first electro-conductive agent having a fibrous shape, and a second electro-conductive agent having a shape other than the fibrous shape. The active material particles include at least one compound selected from the group consisting of a monoclinic titanium-containing oxide and an orthorhombic titanium-containing composite oxide. The active material-containing layer satisfies formula (1): 0.6?B/A?1.5. A is a thickness [?m] of the active material-containing layer. B is a maximum length [?m] of the first electro-conductive agent in the active material-containing layer.

Abstract: According to one embodiment, there is provided a laminate including a first current collector, a first current collector tab, a first active material-containing layer, and a first film containing an inorganic material. A back surface of the first active material-containing layer is supported on at least a part among front and back surfaces of the first current collector. A first thickness at a first end surface of the first active material-containing layer is smaller than a second thickness at a second end surface facing reverse with respect to the first end surface. The first film covers at least the first end surface of the first active material-containing layer and a portion among front and back surfaces of the first current collector tab adjacent to the first end surface.