Described herein is a multilayer microporous film or membrane that may exhibit improved properties, including improved dielectric break down and strength, compared to prior monolayer or tri-layer microporous membranes of the same thickness. The preferred multilayer microporous membrane comprises microlayers and one or more lamination barriers. Also disclosed is a battery separator or battery comprising one or more of the multilayer microporous films or membranes. The inventive battery and battery separator is preferably safer and more robust than batteries and battery separators using prior monolayer and tri-layer microporous membranes. Also, described herein is a method for making the multilayer microporous separators, membranes or films described herein.

Provided is a polymer composition for manufacturing a large container that contains high-density polyethylene recycled from a secondary battery separator and has excellent mechanical properties. Specifically, a polymer composition having excellent processability may be prepared by recycling a secondary battery separator, and an eco-friendly large container having excellent mechanical properties such as a flexural modulus, an elongation, and an impact strength in a wide temperature range, and having an excellent environmental stress cracking resistance may be manufactured by molding the polymer composition.

A method of forming edge materials on an electrochemical cell component having a metallic foil substrate including a conductive coating on top and bottom surfaces and first and second edge portions extending laterally outward beyond the conductive coating, includes pulling the metallic foil substrate from a roll, feeding the metallic foil substrate through a profile machine and forming notches within the first and second edge portions that extend inwardly from outermost edges of the first and second edge portions a distance less than a distance between the outermost edges and the conductive coating, and define a plurality of electrode tabs, feeding the strip of metallic foil substrate sequentially through a plurality of 3-dimensional printing machines and printing edge materials onto the electrode tabs and the first and second edge portions between the plurality of electrode tabs, and rolling the strip of metallic foil substrate onto a roll.

A device manufactures an electrode strip for a battery including a current collector strip and at least one layer of electrochemically active composite material on either side of the current collector strip. The device includes an extruder including a sheath, an extrusion head, and an extrusion screw. The extrusion screw includes an outer tube and an inner tube that are coaxial and fitted into one another. The outer tube is mounted so as to be rotatably movable relative to the sheath. The inner tube is stationary relative to the sheath and includes an outlet located upstream of the extrusion head. Moreover, the manufacturing device includes advancing and unwinding structure to convey the current collector strip through the inner tube and up to the extrusion head.

A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler; providing a processing plasticizer; adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.

A film (200) includes a first accommodation portion (210) and a second accommodation portion (220). The first accommodation portion (210) covers one side of the battery element (100). The second accommodation portion (220) covers the other side opposite to the one side of the battery element (100). A recessed portion (232) is formed at a portion of the film (200) folded from one of the first accommodation portion (210) and the second accommodation portion (220) to the other. The recessed portion (232) is recessed towards the battery element (100). The recessed portion (232) extends along one direction orthogonal to a direction from the one side toward the other side of the battery element (100).

A pouch-type secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; and a pouch film in which the electrode assembly is accommodated, wherein the pouch film includes a first side sealing portion from which a negative electrode lead connected to the electrode assembly protrudes, a second side sealing portion from which a positive electrode lead connected to the electrode assembly protrudes, and an upper sealing portion having both end portions connected to the first and second side sealing portions, and the pouch film includes a folded portion disposed on an end of the first side sealing portion and an end of the second side sealing portion, and folded toward a bottom portion of the pouch film, wherein the folded portion is folded in one direction.

Improved battery separators, base films or membranes, batteries, cells, devices, systems, vehicles, and/or methods of making and/or using such separators, films or membranes, batteries, cells, devices, systems, vehicles, and/or methods of enhancing battery or cell charge rates, charge capacity, and/or discharge rates, and/or methods of improving batteries, systems including such batteries, vehicles including such batteries and/or systems, and/or the like; biaxially oriented porous membranes, composites including biaxially oriented porous membranes, biaxially oriented microporous membranes, biaxially oriented macroporous membranes, battery separators with improved charge capacities and the related methods and methods of manufacture, methods of use, and the like; flat sheet membranes, liquid retention media; dry process separators; biaxially stretched separators; dry process biaxially stretched separators having a thickness range between about 5 μm and 50 μm, preferably between about 10 μm and 25 μm, having improved strength, high porosity, and unexpectedly and/or surprisingly high charge capacity, such as, for example, high 10 C rate charge capacity; separators or membranes with high charge capacity and high porosity, excellent charge rate and/or charge capacity performance in a rechargeable and/or secondary lithium battery, such as a lithium ion battery, for high power and/or high energy applications, cells, devices, systems, and/or vehicles, and/or the like; single or multiple ply or layer separators, monolayer separators, trilayer separators, composite separators, laminated separators, co-extruded separators, coated separators, 1 C or higher separators, at least 1 C separators, batteries, cells, systems, devices, vehicles, and/or the like; improved microporous battery separators for secondary lithium batteries, improved microporous battery separators with enhanced or high charge (C) rates, discharge (C) rates, and/or enhanced or high charge capacities in or for secondary lithium batteries, and/or related methods of manufacture, use, and/or the like, and/or combinations thereof are disclosed or provided.

The shape-forming packaging material is a shape-forming packaging material including a heat resistant resin layer as an outer layer, a heat fusible resin layer as an inner layer, and a metal foil layer disposed between both the layers, and is configured such that a print improving resin layer is laminated on a further outer side of the heat resistant resin layer.

A hot-pressing tool mounted on a press and operable under a controlled atmosphere, a method for implementing such a hot-pressing tool, and a facility for manufacturing objects that includes such a hot-pressing tool. The tool includes a first tool portion having a first fastening device to fasten onto a first platen, a second tool portion having a second fastening device to fasten onto a second platen. The first fastening device and the second fastening device are mobile with respect to one another to define a pressing chamber having an inner volume which is heated via a heating device. The first fastening device and the second fastening device each respectively have a pressing member to exert a pressing force on opposite faces of an object to be pressed in the pressing chamber. The heating device is to heat via optical radiation that is concentrated on the object via a concentration device.