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Na-Rae Park

Na-Rae Park, Yongin-Si KR

Patent application numberDescriptionPublished
20080226977Electrolyte for lithium ion rechargeable battery and lithium ion rechargeable battery including the same - An electrolyte for the lithium rechargeable battery includes a non-aqueous organic solvent, lithium salts, vinylethylene carbonate and fluoroethylene carbonate. With this electrolyte, the ba0ttery life can be improved, and the storing property at a high temperature can be improved because the increasing rate of the battery thickness according to the increased internal pressure in the battery due to the gas generation is reduced when being kept at the high temperature, and the discharging property at a low temperature is improved because the discharge capacity can be increased when discharging at the low temperature.09-18-2008
20110081582RECHARGEABLE LITHIUM BATTERY - A rechargeable lithium battery including: a positive electrode including a nickel-based positive active material; a negative electrode including a negative active material; and an electrolyte including a non-aqueous organic solvent, a lithium salt, a first fluoroethylene carbonate additive, a second vinylethylene carbonate additive, and a third alkane sultone additive, wherein when the battery is thicker than about 5 mm, a mixing weight ratio of the first fluoroethylene carbonate additive to the second vinylethylene carbonate additive ranges from about 5:1 to about 10:1, or when the battery is thinner than about 5 mm, the mixing weight ratio of the first fluoroethylene carbonate additive to the second vinylethylene carbonate additive ranges from about 1:1 to about 4:1.04-07-2011
20110101924ELECTROLYTIC SOLUTION FOR LITHIUM BATTERY, LITHIUM BATTERY COMPRISING THE SAME AND METHOD OF OPERATING THE LITHIUM BATTERY - An electrolytic solution for a lithium battery including a positive electrode having a nickel-cobalt-manganese based active material, the electrolytic solution including a nonaqueous organic solvent and a lithium salt, the nonaqueous organic solvent including ethylene carbonate and dimethyl carbonate, a lithium battery including the electrolytic solution, and a method of operating the lithium battery.05-05-2011
20110117428LITHIUM BATTERY AND METHOD OF MANUFACTURING THE SAME - A lithium battery including a negative electrode containing a negative active material into which lithium ions intercalate at an electrical potential equal to or greater than 1.2 V with respect to a potential of Li, and a method of manufacturing the lithium battery. According to one or more embodiments of the present invention, a lithium battery includes: a positive electrode; a negative electrode including a negative active material into which lithium ions intercalate at an electrical potential equal to or greater than 1.2 V with respect to a potential of Li; an electrolyte including a nonaqueous organic solvent and a lithium salt; and a first layer formed on at least one portion of the surface of the negative electrode by chemical reactions involving a first compound represented by Formula 1, elements contained in the electrolyte, and the negative active material.05-19-2011
20110123870ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - An electrolyte for a rechargeable lithium battery, including a lithium salt, an organic solvent, lithium bis(oxalato)borate (LiBOB), and at least one kind of tris(trialkylsilyl)borate represented by following Chemical Formula 1.05-26-2011

Na-Rae Park, Suwon-Si KR

Patent application numberDescriptionPublished
20090155697Electrolyte for lithium secondary battery and lithium secondary battery comprising the same - An electrolyte for a lithium battery includes a non-aqueous organic solvent; a lithium salt; a first additive, which is 2-sulfobenzoic acid cyclic anhydride, represented by Formula 1 below, and a second additive, which is a carbonate derivative having a substituent selected from the group consisting of halogen, a cyano (CN) group and a nitro (NO06-18-2009
20090181301LITHIUM SECONDARY BATTERY - A lithium secondary battery includes a positive electrode, a negative electrode, a separator separating the positive electrode and the negative electrode, and an electrolyte. The negative electrode active material of the negative electrode includes a material that is capable of reversibly intercalating and deintercalating lithium ions and a metallic material capable of alloying with lithium. The electrolyte includes a chemical compound containing a nitrile (—CN) radical.07-16-2009
20100159336Rechargeable lithium battery - A rechargeable lithium battery includes an electrolyte including an additive such as an ethylene carbonate-based compound represented by Chemical Formula 1 and a silicon-included compound, and a negative electrode including a negative active material including an active element selected from the group consisting of Si, Sn, Ga, Cd, Al, Pb, Zn, Bi, In, Mg, and Ge.06-24-2010
20100248021ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed is an electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same. The electrolyte includes a lithium salt, a trialkylsilyl cyanide compound represented by the following Chemical Formula 1, and an organic solvent.09-30-2010
20100248039Electrolyte for rechargeable lithium battery and rechargeable lithium battery including the same - Disclosed is an electrolyte for a rechargeable lithium battery that includes a lithium salt, a phosphine compound having at least one trialkylsilyl group and organic solvent, and a rechargeable lithium battery including the electrolyte. The phosphine compound may be tris(trialkylsilyl)phosphine wherein the alkyl groups are the same or different and are each independently selected from C1 to C6 alkyl.09-30-2010
20100255370ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed is an electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same. The electrolyte includes a lithium salt, trialkylsilyl(meth)acrylate compound represented by the following Chemical Formula 1, a halogenated carbonate compound, and an organic solvent.10-07-2010
20110050178ELECTROLYTIC SOLUTION FOR LITHIUM BATTERY, LITHIUM BATTERY EMPLOYING THE SAME AND METHOD FOR OPERATING THE LITHIUM BATTERY - In an embodiment of the invention, an electrolytic solution for a lithium battery including a cathode having a nickel (Ni)-cobalt (Co)-manganese (Mn)-based active material includes a nonaqueous organic solvent, a lithium salt, and adiponitrile. A lithium battery employs the electrolytic solution. A method of operating the battery includes charging the battery to a final charge voltage of about 4.25V or greater.03-03-2011

Patent applications by Na-Rae Park, Suwon-Si KR