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 |
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 |
20130252066 | SEPARATOR AND RECHARGEABLE LITHIUM BATTERY - In one aspect, a separator that includes a porous substrate; and a coating layer including an inorganic compound-organic/inorganic binder, and a binder polymer, and a rechargeable lithium battery including the separator is provided. | 09-26-2013 |
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 |
20140106218 | POLYMER ELECTRODE FOR LITHIUM SECONDARY BATTERY INCLUDING THE POLYMER AND LITHIUM SECOND BATTERY EMPLOYING THE ELECTRODE - A polymer includes a first repeating unit having a cationic group and a second repeating unit having an anionic group. The polymer may further include a third repeating unit having a non-ionic group. The polymer may include first and second polymers, each of which includes a first repeating having a cationic group and a second repeating unit having an anionic group. The cationic group of the first polymer may form an intermolecular bond with the anionic group of the second polymer, and the anionic group of the first polymer may form an intermolecular bond with the cationic group of the second polymer. An electrode for a lithium secondary battery includes the polymer, and a lithium secondary battery employs the electrode. | 04-17-2014 |
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 |
20140308565 | SEPARATOR AND LITHIUM BATTERY INCLUDING THE SEPARATOR - A separator including a porous base material layer and a coating layer disposed on at least one surface of the porous base material layer, wherein the coating layer includes the binder composition, and a binder film comprising the binder composition has an elongation of 10% or less measured after maintaining the binder film under a load of 50 g at 150° C. for 10 minutes, and a lithium battery including the same. | 10-16-2014 |
20150083975 | COMPOSITE BINDER COMPOSITION FOR SECONDARY BATTERY, CATHODE AND LITHIUM BATTERY CONTAINING THE BINDER COMPOSITION - In an aspect, a binder composition, a cathode including the same, and a lithium battery including the cathode, wherein the binder composition includes a first fluorine containing binder including a polar functional group; a second fluorine containing binder not including a polar functional group; and a non-fluorine containing binder including a repeating unit resulting from polymerization of an acryl monomer and a repeating unit resulting from polymerization of an olefin monomer, wherein the first fluorine containing binder is a vinylidene fluoride containing binder is provided. | 03-26-2015 |