Patent application number | Description | Published |
20110305944 | Electrode Assembly and Rechargeable Battery Using Same - An electrode assembly according to an exemplary embodiment of the present invention comprises: a first electrode which includes a first electrode current collector and a first electrode active material layer formed on the first electrode current collector; a second electrode which includes a second electrode current collector and a second electrode active material layer formed on the second electrode current collector; and a separator disposed between the first electrode and the second electrode. A supporting portion is formed of a groove or a protrusion at an edge of the first electrode current collector, and a combination portion is combined with the supporting portion on the first electrode active material layer. | 12-15-2011 |
20110318620 | RECHARGEABLE BATTERY - A rechargeable battery including an electrode assembly that includes a positive electrode and a negative electrode and a separator and is configured of any one of a winding type and a stacking type and a case receiving the electrode assembly together with an electrolyte solution. A positive electrode includes a positive current collector and a negative electrode includes a negative current collector. At least one of a positive current collector and a negative current collector is positioned at a base layer to which an active material is applied and protruding portions that are positioned at one end of the base layer and are formed at a larger thickness than the base layer to surface-contact each other at the wound or stacked electrode assembly. | 12-29-2011 |
20120070737 | BINDER COMPOSITION FOR RECHARGEABLE LITHIUM BATTERY, AND ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are a binder composition for a rechargeable lithium battery including a cross-linked compound of polyacrylic acid substituted with an alkali cation and polyvinyl alcohol and an electrode and rechargeable lithium battery including the same. The cross-linked compound of polyacrylic acid and polyvinyl alcohol is obtained by heating polyacrylic acid and polyvinyl alcohol to effect a cross-linking reaction via esterification. The cross-linked compound of polyvinyl alcohol and polyacrylic acid substituted with an alkali cation may improve phase stability of a binder, and has high cross-linking ratio, thereby providing for excellent performance of a rechargeable lithium battery. | 03-22-2012 |
20120135307 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PRODUCING NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed are a negative active material of a rechargeable lithium battery and a rechargeable lithium battery including a negative electrode, and the negative electrode includes a negative active material layer including a negative active material represented by the following Chemical Formula 1. | 05-31-2012 |
20120177989 | NEGATIVE ACTIVE MATERIAL COMPOSITION, METHOD OF PREPARING NEGATIVE ELECTRODE PLATE BY USING NEGATIVE ACTIVE MATERIAL COMPOSITION, AND LITHIUM SECONDARY BATTERY MANUFACTURED BY USING THE NEGATIVE ACTIVE MATERIAL COMPOSITION - A negative active material composition includes a negative active material, a binder, and a solvent, in which the solvent includes an aqueous solvent and an organic solvent. A method of preparing a negative electrode plate uses the negative active material composition. A lithium battery is manufactured using the negative active material composition, and has good lifetime characteristics due to the formation of pores in the electrode plate. | 07-12-2012 |
20130252110 | NEGATIVE ACTIVE MATERIAL AND LITHIUM BATTERY CONTAINING THE SAME - A negative active material includes a silicon-based particle and a crystalline carbonaceous material, the crystalline carbonaceous material including a graphite particle and a carbonaceous nano-sheet. | 09-26-2013 |
20130302661 | SEPARATOR AND METHOD OF MANUFACTURING THE SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A separator for a lithium battery includes a porous substrate and a coating layer on at least one side of the porous substrate, the coating layer having a first side adjacent to the porous substrate, and a second side opposite the first side. The coating layer may include an inorganic compound and a polymer binder, and an amount of the polymer binder at the second side is greater than an amount of the polymer binder at the first side. A rechargeable lithium battery includes the separator. | 11-14-2013 |
20130323569 | SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer disposed on one or more sides of the porous substrate, the coating layer including organic particles and a binder polymer, wherein the organic particles include a material different from that of the binder polymer and the binder polymer is included in the coating layer in an amount in a range of 50 to 99 wt % based on the total amount of the coating layer, and a rechargeable lithium battery including the same. | 12-05-2013 |
20140272532 | SEPARATOR AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are porous substrate and a coating layer positioned on one side or both sides of the porous substrate, wherein the coating layer includes a filler (A) having an average particle diameter of about 0.3 μm to about 2 μm; and a binder (B) including an organic polymer and an inorganic particle, an organic particle, or a combination thereof, wherein an average particle diameter of each of the inorganic particle and the organic particle is about 5 nm to about 200 nm, and a rechargeable lithium battery including the separator. | 09-18-2014 |