Patent application number | Description | Published |
20080233479 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Negative active materials for rechargeable lithium batteries are provided. One negative active material includes at least one Si active particle and a metal matrix surrounding the Si active particle. The metal matrix does not react with the Si active particle. The negative active material has a martensite phase when X-ray diffraction intensity is measured using a CuKα ray. The negative active material has improved efficiency and cycle-life. | 09-25-2008 |
20080233480 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY - Negative active materials and rechargeable lithium batteries including the negative active materials are provided. The negative active material includes an intermetallic compound of Si and a metal, and a metal matrix including Cu and Al. The negative active material may provide a rechargeable lithium battery having high capacity and excellent cycle-life and cell efficiency. | 09-25-2008 |
20080248389 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD FOR PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Negative active materials for rechargeable lithium batteries are provided. One negative active material includes a metal matrix, and an intermetallic compound including a Si active metal and an additive metal dispersed in the metal matrix. The intermetallic compound does not react with the metal matrix. | 10-09-2008 |
20080268338 | NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - The negative electrode for a rechargeable lithium battery includes a current collector and a negative active material layer disposed on the current collector. The negative active material layer includes a metal-based negative active material and sheet-shaped graphite and has porosity of 20 to 80 volume %. The negative electrode for a rechargeable lithium battery can improve cell characteristics by inhibiting volume change and stress due to active material particle bombardment during charge and discharge, and by decreasing electrode resistance. | 10-30-2008 |
20110086271 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Disclosed are a negative active material for a rechargeable lithium battery that includes a core including silicon oxide represented by the following Chemical Formula 1; and a surface-treatment layer surrounding the core and including metal oxide represented by the following Chemical Formula 2, a method of preparing the negative active material, and a rechargeable lithium battery including the negative active material. The metal of the metal oxide is included in an amount of about 0.1 wt % to about 20 wt % based on the total weight of the negative active material for a rechargeable lithium battery. | 04-14-2011 |
20110097629 | Negative Active Material for Rechargeable Lithium Battery and Rechargeable Lithium Battery Including Same - A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material includes Si-based material core, a carbon coating layer coating the surface of the Si-based material core, and an inorganic salt position on the surface of the carbon coating layer. | 04-28-2011 |
20110104568 | Negative Electrode For Rechargeable Lithium Battery and Rechargeable Lithium Battery Including Same - A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative electrode including a current collector; and an active material layer formed on the current collector. The active material layer includes a solid solution of a metallic component, and an active material that is capable of forming a lithium-included compound, the metallic component selected from Cu, Ti, a Cu—X alloy, a Ti—X alloy, and a combination thereof. In the alloys, X is selected from an alkaline metal, an alkaline-earth metal, a Group | 05-05-2011 |
20140234535 | NEGATIVE ACTIVE MATERIAL FOR A RECHARGEABLE LITHIUM BATTERY, A METHOD OF PREPARING THE SAME, AND A RECHARGEABLE LITHIUM BATTERY COMPRISING THE SAME - The present invention relates to a negative active material for a rechargeable lithium battery, which includes a silicon-based composite having a silicon oxide of the form SiO | 08-21-2014 |