Abstract: Disclosed is a secondary battery comprising: an electrode assembly in which a first electrode plate, a second electrode plate, and a separator are rolled up; and a support plate which is coupled to one end surface of the electrode assembly where the rolled first electrode plate, second electrode plate, and separator are exposed, so as to support the electrode assembly. A secondary battery according to an embodiment of the present invention comprises a support plate coupled to the lower end of an electrode assembly, whereby, when the secondary battery falls, movements of the electrode assembly can be prevented, and deformation of the electrode assembly due to an external impact can be suppressed.

Abstract: The present disclosure provides a method for making a coated single crystalline cathode active material. The continuous hydrothermal manufacturing process may include several steps: a) preheating a metal solution, a lithium solution, and a coating solution; b) generating a first mixture by mixing the metal solution and the lithium solution at below a critical point of the first mixture; c) generating a second mixture by mixing the first mixture and the coating solution above a critical point of the second mixture to synthesize the coated single crystalline cathode active material; and d) filtering out the coated single crystalline cathode active material.

Abstract: A nonaqueous electrolyte secondary battery according to an aspect of the present disclosure includes: an electrode body in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween; and an exterior package which receives the electrode body, the negative electrode plate includes a negative electrode collector, a first negative electrode mixture layer formed on a winding inside first surface of the negative electrode collector, and a second negative electrode mixture layer formed on a winding outside second surface of the negative electrode collector, the first negative electrode mixture layer contains first graphite particles as a primary component, the second negative electrode mixture layer contains second graphite particles as a primary component, and the first graphite particles has an internal void rate lower than an internal void rate of the second graphite particles.

Abstract: Some embodiments of the present application relate to a battery module and a battery pack. The battery module includes a plurality of battery cells, two insulating members and a binding strip. The insulating member includes a first face and a second face, the first face is located on a side face of the battery module, the second face is located on a bottom face of the battery module, and the two insulating members are respectively disposed on two sides of the battery module in a horizontal direction. The binding strip surrounds the plurality of battery cells and the insulating members.

Abstract: Disclosed are a separator for a lithium ion secondary battery, a method for producing the same, and a secondary battery using the same. A separator structure includes a support disposed inside a secondary battery. The support includes a porous polymer matrix, cellulose nano fibers dispersed in the matrix, and inorganic additives dispersed in the matrix, wherein at least some of the inorganic additives are attached to the cellulose nano fibers and are distributed in the matrix.

Abstract: Provided are the system and method of molding a gas collection portion of a battery pouch, and more particularly, the system and method of molding a gas collection portion to collect gas in a portion where an electrode tab welding portion of a battery pouch is disposed. In the system and method of molding the gas collection portion of the battery pouch according to the present disclosure, the electrode tab welding portion may also be molded when the battery pouch is molded, and the gas generated in the battery cell may thus be collected in a space formed between the pouch inclined surfaces, thereby preventing or delaying venting of the battery pouch.

Abstract: A method for coating of lithium ion electrode materials via atomic layer deposition. The coated materials may be integrated in part as a dopant in the electrode itself via heat treatment forming a doped lithium electrode.

Abstract: An all-solid battery includes a body including a solid electrolyte layer and an anode layer and a cathode layer alternately stacked with the solid electrolyte layer interposed therebetween, and first and second external electrodes disposed on external surfaces of the body. The anode layer and the cathode layer include an active electrode material. The active electrode material included in the anode layer and the cathode layer is the same non-polar-based material.

Abstract: A method for processing positive electrode active material waste of lithium ion secondary batteries, the waste containing cobalt, nickel, manganese and lithium, the method including: a carbon mixing step of mixing the positive electrode active material waste in the form of powder with carbon to obtain a mixture having a ratio of a mass of carbon to a total mass of the positive electrode active material waste and the carbon of from 10% to 30%; a roasting step of roasting the mixture at a temperature of from 600° C. to 800° C. to obtain roasted powder; a dissolution step including a first dissolution process of dissolving lithium in the roasted powder in water or a lithium-containing solution, and a second dissolution process of dissolving the lithium in a residue obtained in the first dissolution process in water; and an acid leaching step of leaching a residue obtained in the lithium dissolution step with an acid.

Abstract: A rectangular secondary battery including a sealing plate. The scaling plate has a first fitting recess that is nearer than a positive electrode terminal attachment hole to a center of the sealing plate and a second fitting recess that is nearer than the positive electrode terminal attachment hole to an end portion of the sealing plate. The first fitting recess and the second fitting recess are disposed at positions that are displaced from the center of the sealing plate in a transversal direction of the sealing plate. A first fitting protrusion and a second fitting protrusion of a second outer insulator are respectively disposed in the first fitting recess and the second fitting recess.

Abstract: Various embodiments of the present invention relate to a secondary battery, and the objective of the present invention is to provide a secondary battery, which has drop-impact resistance, by providing an electrode assembly having a relatively thick inner circumferential and a relatively thin outer circumferential tab. To this end, disclosed is a secondary battery, which comprises an electrode assembly comprising: an anode plate having an inner circumferential tab formed at a wound front end thereof; a separator covering the anode plate; and a cathode plate having an outer circumferential tab formed at a wound distal end thereof.

Abstract: A negative electrode for a nonaqueous electrolyte with a negative electrode mixture layer that includes a first layer and a second layer. The first layer is formed on the negative electrode current collector and includes a negative electrode active material and a first binding agent. The negative electrode active material in the first layer includes a carbon material A and a Si-containing compound. The first binding agent includes polyacrylic acid or a salt thereof. The second layer is formed on the first layer and includes a negative electrode active material and a second binding agent. The negative electrode active material in the second layer includes a carbon material B. The carbon material B has a tap density higher than a tap density of the carbon material A. A packing density of the second layer is lower than a packing density of the first layer.

Abstract: A device may include a metallic substrate and a plurality of nanorod arrays arranged on the substrate. The nanorod arrays may be made of porous metallic nanostructures and may appear black in color.

Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly which is wound and includes a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode; a casing which accommodates the electrode assembly; a first electrode tab which is connected to a non-coated portion of the first electrode; a second electrode tab which is connected to a non-coated portion of the second electrode; and a first insulating tape which is positioned at a winding start portion of the electrode assembly and attached to the non-coated portion of the first electrode so as to at least cover a center of a first curved portion which is curvedly formed as the electrode assembly is wound.

Abstract: An electrode assembly includes: a first electrode plate having a first electrode uncoated portion spaced apart from both ends in a longitudinal direction thereof, and a base tab on one surface of the first electrode uncoated portion; a second electrode plate having a second electrode uncoated portion spaced apart from both ends in a longitudinal direction thereof, and a base tab on one surface of the second electrode uncoated portion; a separator between the first electrode plate and the second electrode plate; a tab cover tape attached to the one surfaces of the first electrode uncoated portion and the second electrode uncoated portion; an uncoated portion cover tape attached to each of the other surfaces of the first electrode uncoated portion and the second electrode uncoated portion; and an insulating tape attached onto the second electrode plate at a position corresponding to the first electrode uncoated portion.

Abstract: A solid oxide electrolyzer electrolyte composition includes a scandia and ceria stabilized zirconia, containing 5 to 12 mol % scandia, 1 to 7 mol % ceria, and 80 to 94 mol % zirconia, or a yttria and ceria stabilized zirconia containing 3 to 10 mol % yttria, 1 to 6 mol % ceria, and 84 to 96 mol % zirconia.

Abstract: Embodiments described herein relate generally to systems and methods for continuously and/or semi-continuously manufacturing electrochemical cells with semi-solid electrodes. In some embodiments, a method can include mixing an active material, a conductive material, and an electrolyte to form a semi-solid electrode material. The method further includes drawing a vacuum on the semi-solid electrode material, compressing the semi-solid electrode material to form an electrode brick, and dispensing a portion of the electrode brick onto a current collector via a dispensation device to form an electrode. In some embodiments, the current collector is disposed on a pouch material. In some embodiments, the dispensation device includes a top blade for top edge control and two side plates for side edge control. In some embodiments, the method can further include conveying the electrode through the top blade and the two side plates to shape the electrode.

Abstract: A secondary battery includes: an anode including an anode active material on an anode active material support; a cathode including a cathode active material on a cathode active material support; a separator between the anode and the cathode; an anode guide extending in a first direction from a first region along an edge of the anode active material support; and a cathode guide extending in a second direction from a second region along an edge of the cathode active material support.

Abstract: A lithium ion secondary battery that includes: a positive electrode having a positive electrode active material capable of storing and releasing lithium ions, the positive electrode active material containing positive electrode active material grains having a coating layer containing a carbon compound having an acid functional group, and an amount of the acid functional group in a composite including the positive electrode active material and the coating layer is 0.004 mmol/g to 0.0062 mmol/g; a negative electrode having a negative electrode active material capable of storing and releasing lithium ions; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte containing a polar solvent having a relative permittivity of 20 or more.

Abstract: An electrolyte composition and a lithium secondary battery including the same are disclose herein. The electrolyte composition has improved high temperature safety. In some embodiments, the electrolyte composition includes an additive including a compound represented by Formula 1. Each R1 is independently a single bond, an alkylene group having 1 to 10 carbon atoms, or each R2 is independently a double or triple bond including 2 carbon atoms, each R3 is independently hydrogen or an alkyl group having 1 to 4 carbon atoms, and a is an integer of 1 to 10. The additive may reinforce an SEI layer on the surface of an electrode, thereby having advantages of improved storage and lifetime characteristics at a high temperature and a decreased amount of gas generated in the battery.