| Patent application number | Description | Published |
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| 20100330430 | LITHIUM SECONDARY BATTERY WITH HIGH ENERGY DENSITY - The present invention relates to electrodes for a lithium secondary battery with a high energy density and a secondary battery with a high energy density using the same. A negative electrode includes a material which can be alloyed with lithium alloy. A positive electrode is made of a transition metal oxide which can reversibly intercalate or deintercalate lithium. Here, the entire reversible lithium storage capacity of the positive electrode is greater than the capacity of lithium dischargeable from the positive electrode. Further, the present invention relates to electrodes for a lithium secondary battery in which metal lithium is coated on a negative electrode, a positive electrode, or both, a method of manufacturing the electrodes, and a lithium secondary battery including the electrodes. The lithium secondary battery of the present invention is excellent in safety because metal lithium does not remain after being activated and excellent in a capacity per unit weight. | 12-30-2010 |
| 20110189577 | BIPOLAR ELECTRODE/SEPARATOR ASSEMBLY, BIPOLAR BATTERY COMPRISING THE SAME AND METHOD OF MANUFACTURING THE SAME - Disclosed is a bipolar electrode/separator assembly including a bipolar electrode-adhesive film assembly including a bipolar electrode holding active materials, having different polarities, on central portions of top and bottom surfaces of a collector, respectively, and adhesive films on both top and bottom surfaces of the collector with respect to at least two of four edge surfaces of the collector on which electrode layers are not coated in the bipolar electrode, and a separator stacked on one or both top and bottom surfaces of the bipolar electrode-adhesive film assembly, wherein the collector and the separator are directly bonded by the adhesive film to thereby seal the bipolar electrode. A bipolar battery including the bipolar electrode/separator assembly and methods of manufacturing the same are also disclosed. A battery having desired capacity and voltage is provided by electrically connecting such bipolar electrode/separator assemblies either in series or in parallel according to usage. | 08-04-2011 |
| 20110311869 | POSITIVE ELECTRODE ACTIVE MATERIAL WITH HIGH CAPACITY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A high capacity lithium secondary battery includes a lithium manganese oxide having a layered structure exhibiting a great irreversible capacity in the event of overcharging at a high voltage and a spinel-based lithium manganese oxide. Because it is activated at a high voltage of 4.45 V or higher based on a positive electrode potential, additional lithium for utilizing a 3V range of the spinel-based lithium manganese oxide can be provided and an even profile in the entire SOC area can be obtained. Because the lithium secondary battery includes the mixed positive electrode active material including the spinel-based lithium manganese oxide and the lithium manganese oxide having a layered structure, and is charged at a high voltage, its stability can be improved. Also, the high capacity battery having a large available SOC area and improved stability without causing an output shortage due to a rapid voltage drop in the SOC area can be implemented. | 12-22-2011 |
| 20110311872 | POSITIVE-ELECTRODE ACTIVE MATERIAL FOR ELEVATION OF OUTPUT AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A lithium secondary battery having improved output characteristics is provided. A high voltage mixed positive electrode active material has an even profile without causing a rapid voltage drop over the entire SOC area by improving a rapid voltage drop phenomenon occurring due to the difference between the operation voltages of mixed lithium transition metal oxides, and improves output characteristics at a low voltage. The lithium secondary battery includes the mixed positive electrode active material. In particular, the lithium secondary battery can sufficiently satisfy the required conditions such as output characteristics, capacity, stability, and the like, when it is used as a power source of a midsize or large device such as an electric vehicle. | 12-22-2011 |
| 20120007028 | POLYMER-SILICON COMPOSITE PARTICLES, METHOD OF MAKING THE SAME, AND ANODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - The present invention relates to polymer-silicon composite particles using silicon having high energy density, a method of making the same, an anode and a lithium secondary battery including the same. The silicon having high energy density is used as an anode active material to provide a lithium secondary battery having large capacity. Silicon-polymer composite particles having a metal plated on the surface thereof are provided to solve the problem that silicon has low electrical conductivity and a method of preparing the same is provided to produce an electrode having improved electrical conductivity. Furthermore, silicon-polymer composite particles having a metal coated on the surface thereof through electroless plating are prepared and an electrode is formed using the silicon-polymer composite particles. | 01-12-2012 |
| 20120070742 | LITHIUM SECONDARY BATTERY WITH HIGH ENERGY DENSITY - The present invention relates to electrodes for a lithium secondary battery with a high energy density and a secondary battery with a high energy density using the same. A negative electrode includes a material which can be alloyed with lithium alloy. A positive electrode is made of a transition metal oxide which can reversibly intercalate or deintercalate lithium. Here, the entire reversible lithium storage capacity of the positive electrode is greater than the capacity of lithium dischargeable from the positive electrode. | 03-22-2012 |
| 20120217452 | MIXED CATHODE ACTIVE MATERIAL HAVING IMPROVED POWER CHARACTERISTICS AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided are a mixed cathode active material including lithium manganese oxide expressed as Chemical Formula 1 and a stoichiometric spinel structure Li | 08-30-2012 |
| 20120244432 | MIXED CATHODE ACTIVE MATERIAL HAVING IMPROVED POWER CHARACTERISTICS AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided are a mixed cathode active material including layered structure lithium manganese oxide expressed as Chemical Formula 1 and a second cathode active material having a plateau voltage profile in a range of 2.5 V to 3.3 V, and a lithium secondary battery including the mixed cathode active material. The mixed cathode active material and the lithium secondary battery including the same may have improved safety and simultaneously, may be used in an operating device requiring the foregoing battery by widening a state of charge (SOC) range able to maintain power more than a required value by allowing the second cathode active material to complement low power in a low SOC range. | 09-27-2012 |
