Provided is a secondary battery including an electrode assembly and an outer case configured to house the electrode assembly. The secondary battery includes a terminal member provided on the outer case with an insulating material interposed therebetween and connected to a tab of the electrode assembly. The outer case is provided with a cavity through which the tab passes, the terminal member is bonded onto a surface of the outer case with the insulating material interposed therebetween, the surface being positioned around the cavity, and a part of a width dimension of a bonding region provided to surround the cavity for the bonding is reduced.

Provided is a secondary battery including an electrode assembly and an outer case configured to house the electrode assembly. The secondary battery includes a terminal member provided on the outer case with an insulating material interposed therebetween and connected to a tab of the electrode assembly. The outer case is provided with a cavity through which the tab passes, the terminal member is bonded onto a surface of the outer case with the insulating material interposed therebetween, the surface being positioned around the cavity, and a part of a width dimension of a bonding region provided to surround the cavity for the bonding is reduced.

A negative electrode for lithium secondary batteries and a method of manufacturing the same are provided. The negative electrode includes a negative electrode current collector and a lithiophilic material formed on at least one surface of the negative electrode current collector, wherein the lithiophilic material is an oxidized product of a coating material coated on the negative electrode current collector and includes at least one of a metal or a metal oxide, and an oxide layer is formed on a surface of the negative electrode current collector having the lithiophilic material formed thereon.

Provided herein is a solid-state battery having high volume energy density, as well as a method of manufacture of such a solid-state battery. A solid-state battery 100 is a laminate including a first collector layer 1, a positive electrode layer 2, a solid electrolyte layer 5, a negative electrode layer 4, and a second collector layer 3, in this order from the top. The solid-state battery 100 satisfies α>90°, β>90°, and α>β, where α is the angle formed in the positive electrode layer 2 by a side surface 2A of the positive electrode layer 2 and the top surface of the solid electrolyte layer 5 underlying the positive electrode layer 2, and β is the angle formed in the negative electrode layer 4 by a side surface 4A of the negative electrode layer 4 and the top surface of the second collector layer 3 underlying the negative electrode layer 4.

Provided herein is a solid-state battery having high volume energy density, as well as a method of manufacture of such a solid-state battery. A solid-state battery 100 is a laminate including a first collector layer 1, a positive electrode layer 2, a solid electrolyte layer 5, a negative electrode layer 4, and a second collector layer 3, in this order from the top. The solid-state battery 100 satisfies α>90°, β>90°, and α>β, where α is the angle formed in the positive electrode layer 2 by a side surface 2A of the positive electrode layer 2 and the top surface of the solid electrolyte layer 5 underlying the positive electrode layer 2, and β is the angle formed in the negative electrode layer 4 by a side surface 4A of the negative electrode layer 4 and the top surface of the second collector layer 3 underlying the negative electrode layer 4.

A drum arranged for reeling and dividing an elongate web of sheet material to produce discrete stacks of web portions is provided. The drum includes a series of faces forming a web-receiving loop that extends around a central axis of the drum, each face of the drum being defined by a respective drum segment that is configured to support a respective stack of web portions of a web reeled onto the web-receiving loop. The drum segments are movable to enable the web-receiving loop to expand to increase tension in a web reeled onto the web-receiving loop to divide the elongate web into discrete stacks.

A drum arranged for reeling and dividing an elongate web of sheet material to produce discrete stacks of web portions is provided. The drum includes a series of faces forming a web-receiving loop that extends around a central axis of the drum, each face of the drum being defined by a respective drum segment that is configured to support a respective stack of web portions of a web reeled onto the web-receiving loop. The drum segments are movable to enable the web-receiving loop to expand to increase tension in a web reeled onto the web-receiving loop to divide the elongate web into discrete stacks.

To provide a secondary battery in which a side reaction does not easily occur at an interface between a positive electrode active material and a solid electrolyte, an interface between the positive electrode active material and a positive electrode current collector, or the like even when charge and discharge are repeated. In one embodiment of the present invention, a buffer layer or a protective layer is provided on a current collector surface or between a current collector layer and an active material layer to prevent deterioration such as oxidation of the current collector. As the buffer layer or the protective layer, it is possible to use a titanium compound such as titanium oxide, titanium oxide in which nitrogen is substituted for part of oxygen, titanium nitride, titanium nitride in which oxygen is substituted for part of nitrogen, or titanium oxynitride (TiO.sub.xN.sub.y, where 0<x<2 and 0<y<1). Titanium nitride is particularly preferable because it has high conductivity and has a high capability of inhibiting oxidation.

An all-solid secondary battery includes: a cathode layer; an anode layer; and a solid electrolyte between the cathode layer and the anode layer, wherein the anode layer includes an anode current collector and a first anode active material layer on the anode current collector, the first anode active material layer includes a modified ordered mesoporous carbon, and an oxygen content of a surface of the modified ordered mesoporous carbon is about 3 atomic percent to about 10 atomic percent, based on a total content of the surface, when determined by an X-ray photoelectron spectroscopy spectrum of the surface of the modified ordered mesoporous carbon.

An all-solid secondary battery includes: a cathode layer; an anode layer; and a solid electrolyte between the cathode layer and the anode layer, wherein the anode layer includes an anode current collector and a first anode active material layer on the anode current collector, the first anode active material layer includes a modified ordered mesoporous carbon, and an oxygen content of a surface of the modified ordered mesoporous carbon is about 3 atomic percent to about 10 atomic percent, based on a total content of the surface, when determined by an X-ray photoelectron spectroscopy spectrum of the surface of the modified ordered mesoporous carbon.