A dual slot die coater including a lower plate, an intermediate plate positioned on the lower plate and an upper plate positioned on the intermediate plate, a lower slot being formed between the lower plate and the intermediate plate, and an upper slot being formed between the intermediate plate and the upper plate. The lower plate, the intermediate plate and the upper plate have a lower die lip, an intermediate die lip and an upper die lip, each forming an front end with respect to the current collector, respectively, and a distance between the current collector and the lower die lip is larger than a distance between the current collector and the upper die lip and a distance between the current collector and the intermediate die lip.

Alkali metal secondary batteries that include anodes constructed from alkali metal foil applied to only one side of a porous current collector metal foil. Openings in the porous current collectors permit alkali metal accessibility on both sides of the anode structure. Such anode constructions enable the utilization of lower-cost and more commonly available alkali metal foil thickness, while still achieving high cell cycle life at a significantly reduced cost. Aspects of the present disclosure also include batteries with porous current collectors having increased volumetric and gravimetric energy densities, and methods of manufacturing anodes with porous current collectors.

A method of manufacturing a formed body for an electrode includes: preparing an electrode material; placing a shape retaining member having an rectangular tubular shape with one opening portion L thereof facing down, and supplying the electrode material into the shape retaining member from the other opening portion M thereof; and discharging the electrode material onto a support from the opening portion L while relatively moving the opening portion L and the support, to form a film, a bulk density D.sub.1 of the electrode material in the first step and a bulk density D.sub.2 of the electrode material at the opening portion L satisfying a relationship of D.sub.2/D.sub.1=1.1 to 30, and a width T.sub.1 of the opening portion L in a short side direction and a distance T.sub.2 between the end portion X of the opening portion L and the support satisfying a relationship of width T.sub.1>distance T.sub.2.

A positive electrode of an active material of interconnected polycrystalline and porous particles for secondary battery has been developed to achieve greater diffusion, excellent specific capacity and life cycle. The active material of the positive electrode for secondary battery is obtained from a hot-pressing process to which the composite fiber membrane is subjected with the precursors of the active metals and the polymer, obtaining morphologies such as monocrystalline particles, two-dimensional plates, and bars.

A composite solid-state electrolyte membrane is manufactured by a meltblown extrusion process. A solid-state battery and a method for manufacturing a solid-state battery includes the solid-state electrolyte membrane.

Provided is an electrode paste production method that can produce a low-viscosity electrode paste which can be readily applied even if the solid content concentration is high, for example in excess of 65% by mass. The electrode paste production method, in which the paste contains an active material and a solvent, includes a micromixing treatment step in which a mixture of a solid fraction containing an active material blended at a high solid content concentration and a solvent is kneaded using a micromixer.

The concepts herein provide for a rechargeable lithium-ion battery cell having an anode with improved properties, including a capability to suppress formation of lithium dendrites after cell formation and in-use. This includes an anode for a rechargeable battery that includes a current collector having an indium nitride layer, wherein the indium nitride layer includes indium nitride, an electrically conductive material, and a polymeric binder.

A continuous extrusion kneader comprising a first supply section for supplying a solid electrolyte, a first kneading section for kneading a material supplied from the first supply section to provide an intermediate mixture, a second supply section for supplying an electrode active material to the intermediate mixture, and a second kneading section for kneading the intermediate mixture and the material supplied from the second supply section, wherein the first kneading section comprises a forward kneading section for kneading the material supplied from the first supply section and conveying the material downstream, and a reverse kneading section for kneading the material supplied from the forward kneading section and applying a force in the upstream direction.

An electrode, a lithium battery including the same, and a method of manufacturing the electrode. The electrode includes an electrode current collector, and an electrode active material layer on at least one surface of the electrode current collector, wherein the electrode active material layer includes a first electrode active material, a second electrode active material, and a binder, the electrode active material layer includes a first cluster, and the first cluster is an agglomerate including a plurality of first electrode active materials, one surface of the electrode active material layer includes a first domain including the first cluster, and an area of the first domain is about 15% to about 60% of the total area of the one surface of the electrode active material layer.

A system for manufacturing a positive electrode for a secondary battery includes an unwinder wound with a positive electrode base material, a first coating unit for coating an insulating material at predetermined positions about widthwise edges of the base material with respect to a transfer direction of the base material supplied from the unwinder, a first drying furnace for drying the insulating material by heating the base material coated with the insulating material, a second coating unit for coating a positive electrode slurry on the base material supplied from the first drying furnace in a region between the insulating material formed at both sides of the base material, and a second drying furnace for heating and drying the base material coated with the insulating material and the positive electrode slurry.