A packaging material for a battery includes a base material layer as an outer layer, a sealant layer as an inner layer, and a barrier layer provided between the base material layer and the sealant layer. The sealant layer is composed of a single layer or a multi-layer. The sealant layer includes a first sealant layer serving as an innermost layer made of a propylene-based resin containing an ethylene-propylene copolymer. In the ethylene-propylene copolymer, a ratio Mw/Mn of a weight average molecular weight Mw to a number average molecular weight Mn, measured by a gel permeation chromatography (GPC), is 1 to 7, a melt flow rate measured at 230° C. at a load of 2.16 kg based on JIS K7210 is 5 g/10 min to 30 g/10 min, and a melting point calculated by a differential scanning calorimetry analysis is 120° C. to 135° C.

A battery is provided which includes a first power generating element, a second power generating element, and a first adhesion layer adhering the first power generating element to the second power generating element. A first positive electrode collector of the first power generating element and a second negative electrode collector of the second power generating element face each other with (i.e., via) the first adhesion layer. Between the first positive electrode collector and the second negative electrode collector, the first adhesion layer is disposed in a region forming a first positive electrode active material layer or a region forming a second negative electrode active material layer, whichever is smaller. The first positive electrode collector and the second negative electrode collector are not in contact with each other in a region in which the first positive electrode active material layer and the second negative electrode active material layer face each other.

A peeling method is provided. In a first step, a resin layer is formed over a support substrate, openings are formed along two opposite sides of a periphery of the resin layer in a top view, an element layer is formed over the resin layer and positioned on an inner side than the openings in the top view, and the support substrate and a counter substrate are bonded to each other so that an adhesive layer is in contact with the support substrate in the openings, thereby forming a process member. In a second step, an entire surface of the process member is irradiated with light from the support substrate side. In a third step, a blade is inserted into an end portion of the process member from an interface between the support substrate and the resin layer or from the resin layer, and is made to pass through the openings.

In a battery manufacturing method using a battery manufacturing apparatus, the battery manufacturing apparatus including a pressing unit, a measurement device, and a controller, the battery manufacturing method includes steps of (a) pressing a battery member by a pressing unit, (b) measuring, after the pressing step (a), by the measurement device, characteristics of the battery member, which has been pressed by the pressing unit, and (c) controlling, after the measurement step (b), by the controller, a state of pressing of the battery member by the pressing unit in accordance with a measurement result of the measurement device.

A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more:
Pore density=(P/A.sup.3)×10.sup.4  (1)
wherein A represents the average pore radius (nm) measured by mercury porosimetry method and P represents the porosity (%).

An interconnected corrugated carbon-based network comprising a plurality of expanded and interconnected carbon layers is disclosed. In one embodiment, each of the expanded and interconnected carbon layers is made up of at least one corrugated carbon sheet that is one atom thick. In another embodiment, each of the expanded and interconnected carbon layers is made up of a plurality of corrugated carbon sheets that are each one atom thick. The interconnected corrugated carbon-based network is characterized by a high surface area with highly tunable electrical conductivity and electrochemical properties.

A protection tape for a printed circuit board (PCB) includes an insulating base plate, a conductive layer over the insulating base plate, and an adhesive layer over the conductive layer, the adhesive layer including a main part having a first thickness and a subsidiary part having a second thickness less than the first thickness, the main part corresponding to at least a center portion of the insulating base plate and the subsidiary part being arranged at an outside of the main part.

Aluminum alloy foil that, when used for battery packaging material, unlikely to develop pinholes or cracks even during molding of battery packaging material, and can exhibit excellent moldability. Aluminum alloy foil, which is for use in battery packaging material, wherein, with respect to cross section obtained by cutting aluminum alloy foil in vertical direction to rolling direction of aluminum alloy foil, which is a vertical direction to surface of aluminum alloy foil, proportion of total area of a {111} plane in total area of crystal planes of face-centered cubic structure, obtained by performing crystal analysis using EBSD method, is 10% or more; and with respect to cross section, a number average grain diameter R (rpm) of crystals in face-centered cubic structure, obtained by performing crystal analysis using EBSD method, satisfies following equation: number average grain diameter R≤0.056X+2.0, where X=thickness (rpm) of aluminum alloy foil.

A an electricity storage device according to the present invention including an electricity storage device packaging material, in the electricity storage device packaging material, from an outer layer thereof, at least an outer layer side resin film layer, an outer layer side adhesive layer, a metal foil layer, an inner layer side adhesive layer, and a heat seal layer being stacked, in which the inner layer side adhesive layer is a layer for bonding the metal foil layer with the heat seal layer, and is a layer obtained by performing a curing process for an adhesive compound including: a polyolefin resin (A) including a carboxyl group or an acid anhydride group; and an epoxy compound (B) including at least two epoxy groups and including at least one of an aromatic amino group and a heterocycle including a nitrogen atom as a heteroatom.

In a method of manufacturing an electrode assembly for a rectangular battery, in which positive electrodes and negative electrodes are alternately laminated so that a separator exists between the respective positive and negative electrodes, the manufacturing method includes the steps of: arranging a plurality of guide members in zigzag form in a perpendicular direction; inserting a continuous member of the separator between one and another one rows of the guide members; folding, into zigzag form, the continuous member by intersecting the rows of the guide members in a horizontal direction; inserting alternately the positive electrodes and the negative electrodes in respective valley grooves of the zigzag-folded continuous member; withdrawing the guide members from the respective valley grooves of the continuous member; and pressing, thereafter, the continuous member in the zigzag direction so as to make flat the continuous member.