Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8158283 | Lithium/nickel composite oxide positive electrode active material for non-aqueous electrolyte-based secondary battery and battery using the same The present invention provides a positive electrode active material for a non-aqueous electrolyte-based secondary battery, composed of a lithium/nickel composite oxide with high capacity, low cost and excellent heat stability, and a high safety non-aqueous electroly... | 04/17/2012 |
| 8153302 | Method of producing active material for lithium secondary battery, method of producing electrode for lithium secondary battery, method of producing lithium secondary battery, and method of monitoring quality of active material for lithium secondary battery A method of producing an active material for a lithium secondary battery, by which impurities causing problems in synthesizing an active material for a lithium secondary battery, including a lithium transition metal oxyanion compound are removed efficiently and enha... | 04/10/2012 |
| 8021787 | High-voltage charge type nonaqueous electrolyte secondary cell The preservation performance of a nonaqueous electrolyte secondary cell charged to high potential is improved while the initial capacity and the cycle property of the cell are also improved. The nonaqueous electrolyte secondary cell includes: a positive electrode ha... | 09/20/2011 |
| 8021786 | Non-aqueous electrolyte secondary cell A non-aqueous electrolyte secondary cell superior in resistance against continuous charging at high potential is provided. The non-aqueous electrolyte secondary cell includes: a positive electrode having lithium phosphate and a positive electrode active material com... | 09/20/2011 |
| 8012625 | Non-aqueous electrolyte secondary cell The present invention aims to provide a non-aqueous electrolyte secondary cell having high capacity and capable of preventing elution of cobalt and decomposition of the electrolyte. This aim can be accomplished by providing a non-aqueous electrolyte secondary cell c... | 09/06/2011 |
| 7981547 | Process for positive electrode active substance for lithium secondary battery A positive electrode active material for a lithium secondary battery containing a lithium-cobalt composite oxide is produced by firing, as a cobalt source, a mixture of substantially spherical cobalt hydroxide or tricobalt tetraoxide having such a sharp particle siz... | 07/19/2011 |
| 7981546 | Non-aqueous electrolyte secondary battery A lithium-containing composite oxide represented by the formula 1: LixNi1-y-z-v-wCoyAlzM1vM2wO2 is used as a positive electrode active material for a non-aqueous elect... | 07/19/2011 |
| 7935443 | Lithium nickel-manganese-cobalt oxide positive electrode active material A nonaqueous electrolytic secondary cell produced at low cost and having a large capacity comprises a negative electrode having an active material mainly composed of a material that at least absorbs and releases lithium ions or metallic lithium, a positive electrode... | 05/03/2011 |
| 7927743 | Lithium metal composite oxide particles, process of producing lithium metal composite oxide particles, electrode structure containing lithium metal composite oxide particles, process of producing electrode structure, and lithium secondary battery having electrode structure There is provided a lithium secondary battery having a high capacity and excellent high-rate discharge characteristic and charge/discharge cycle characteristic. The lithium secondary battery comprises a negative electrode, a positive electrode and an ionic conductor... | 04/19/2011 |
| 7927742 | Negative-limited lithium-ion battery A rechargeable lithium-ion battery includes a positive electrode that includes a first current collector and a first active material. The battery also includes an electrolyte and a negative electrode that includes a second current collector and a second active mater... | 04/19/2011 |
| 7906239 | Cathode active material, method for producing the same, and nonaqueous electrolyte secondary battery A cathode active material capable of improving chemical stability, a method for producing the same, and a nonaqueous electrolyte secondary battery using the same which has high capacity and good charge-discharge cycling characteristics is provided. The cathode has a... | 03/15/2011 |
| 7879494 | Lithium ion secondary battery and manufacturing method therefor Active material particles of a lithium ion secondary battery includes at least a first lithium-nickel composite oxide: LixNi1-y-zCoyMezO2 (where 0.85≦x≦1.25, 0 | 02/01/2011 |
| 7875389 | Lithium-ion battery A lithium-ion battery includes a positive electrode having an active material and a polymeric separator configured to allow electrolyte and lithium ions to flow between a first side of the separator and an opposite second side of the separator. The battery also incl... | 01/25/2011 |
| 7858237 | Nonaqueous electrolyte secondary battery A nonaqueous electrolyte secondary battery includes a positive electrode containing a positive active material, a negative electrode containing a negative active material and a nonaqueous electrolyte. Characteristically, the positive active material comprises a mixt... | 12/28/2010 |
| 7858236 | Lithium-ion battery A lithium-ion battery includes a positive electrode that includes a positive current collector, a first active material, and a second active material. The lithium-ion battery also includes a negative electrode comprising a negative current collector, a third active ... | 12/28/2010 |
| 7846586 | Active material for positive electrode of lithium secondary battery A lithium-nickel complex oxide material for active material for positive electrode of a lithium secondary battery is provided and expressed by the general formula Lix(Ni1-yCoy)1-zMzO2 (where, 0.98≦x... | 12/07/2010 |
| 7824803 | Positive electrode active substance for lithium secondary battery and process for producing the same A positive electrode active material is produced by firing, as a cobalt source, a mixture of a) substantially spherical large particle size cobalt hydroxide or tricobalt tetraoxide having a sharp particle size distribution, and b) small particle size cobalt hydroxid... | 11/02/2010 |
| 7799458 | Nonaqueous electrolytic secondary battery and method of manufacturing the same In a nonaqueous electrolytic secondary battery according to the invention, hexagonal system lithium containing cobalt composite oxide having a crystallite size in a (110) vector direction of 1000 Å or more and having a halogen compound added thereto by burning at ... | 09/21/2010 |
| 7790318 | Positive active material for lithium secondary battery and method of preparing same Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2θ=53° (104 plane) with respect to diffracted intensity of diffracti... | 09/07/2010 |
| 7767343 | Nonaqueous electrolyte secondary battery using lithium cobalt oxide as a positive active material and a nonaqueous electrolyte containing a sulfonyl-containing compound A nonaqueous electrolyte secondary battery including a negative electrode containing a graphite material as the negative active material, a positive electrode containing lithium cobalt oxide as a main component of the positive active material and a nonaqueous electr... | 08/03/2010 |
| 7727673 | Cathode active material, method of manufacturing the same, and battery A cathode active material capable of further improving chemical stability, a method of manufacturing the cathode active material, and a battery using the cathode active material are provided. The cathode includes a cathode active material in which a coating layer ma... | 06/01/2010 |
| 7704640 | Non-aqueous electrolyte secondary cell A non-aqueous electrolyte secondary cell excellent in cycle characteristics is provided. This purpose is achieved by the following structure. A non-aqueous electrolyte secondary cell has a positive electrode having a positive electrode active material, a negative el... | 04/27/2010 |
| 7695869 | Positive active material for lithium secondary battery and method of preparing same Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2θ=53° (104 plane) with respect to diffracted intensity of diffracti... | 04/13/2010 |
| 7691535 | Active substance of positive electrode and non-aqueous electrolyte battery containing the same A positive active material is provided which can give a battery having a high energy density and excellent high-rate discharge performance and inhibited from decreasing in battery performance even in the case of high-temperature charge. Also provided is a non-aqueou... | 04/06/2010 |
| 7682748 | Nonaqueous electrolyte secondary battery In a nonaqueous electrolyte secondary battery having a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte, as the positive electrode active material o... | 03/23/2010 |
| 7682749 | Non-aqueous electrolyte secondary battery A non-aqueous electrolyte secondary battery uses, as its positive electrode or negative electrode, an electrode containing an active material and a conductive agent, the active material being made of a mixture of a molybdenum dioxide and a lithium titanium oxide in ... | 03/23/2010 |
| 7674553 | Positive active material for lithium secondary battery and method of preparing same Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2θ=53° (104 plane) with respect to diffracted intensity of diffracti... | 03/09/2010 |
| 7651816 | Positive electrode active material, non-aqueous electrolyte secondary battery containing the same and method for evaluating positive electrode active material A positive electrode active material powder for a non-aqueous electrolyte secondary battery, wherein an amount of a liquid reagent absorbed by the powder is 20 to 40 ml per 100 g of the powder when the liquid reagent is dibutyl phthalate, and the amount is 20 to 50 ... | 01/26/2010 |
| 7622223 | Nonaqueous electrolyte secondary battery A nonaqueous electrolyte secondary battery includes a positive electrode containing a positive active material, a negative electrode containing a negative active material and a nonaqueous electrolyte. Characteristically, the positive active material comprises a mixt... | 11/24/2009 |
| 7615313 | Electrode material for lithium secondary battery including particles having central portion and surface portion, electrode structure and lithium secondary battery An electrode material for a lithium secondary battery which includes particles each having a central portion and a surface portion covering the surface of the central portion. A distance from a center to an outermost surface of the particle is occupied 80 to 99% by ... | 11/10/2009 |
| 7608363 | Non-aqueous electrolyte secondary battery with vinylene carbonate and divinyl sulfone containing electrolyte A non-aqueous electrolyte secondary battery including a positive electrode containing a positive active material, a negative electrode containing a negative active material and a non-aqueous electrolyte, characterized in that lithium transition metal complex oxide A... | 10/27/2009 |
| 7563541 | Lithium-ion battery A battery includes a positive electrode including a current collector and a first active material and a negative electrode including a current collector, a second active material, and a third active material. The first active material, second active material, and th... | 07/21/2009 |
| 7563540 | Cathode active material and lithium secondary battery using the same A cathode active material of formula (1) below, and a lithium secondary battery using the same, have an extended cycle life and effective charging/discharging characteristics and include a compound of formula (1) below: LixCoyM1-... | 07/21/2009 |
| 7547492 | Lithium cobalt oxide, method for manufacturing the same, and nonaqueous electrolyte secondary battery Lithium cobalt oxide, which can provide a nonaqueous electrolyte secondary battery having an excellent initial capacity and an excellent capacity retention, and a method for manufacturing the same are provided. The lithium cobalt oxide has a tap density of at least ... | 06/16/2009 |
| 7547493 | Lithium cobalt oxide, method for manufacturing the same, and nonaqueous electrolyte secondary battery Lithium cobalt oxide, which can provide a nonaqueous electrolyte secondary battery having an excellent initial capacity and an excellent capacity retention, and a method for manufacturing the same are provided. The lithium cobalt oxide has a tap density of at least ... | 06/16/2009 |
| 7510805 | Lithium metal composite oxide particles having particles with columnar or planar shape There is provided a lithium secondary battery having a high capacity and excellent high-rate discharge characteristic and charge/discharge cycle characteristic. The lithium secondary battery comprises a negative electrode, a positive electrode and an ionic conductor... | 03/31/2009 |
| 7442469 | Cathode active material and non-aqueous electrolyte secondary battery A cathode with a cathode active material is provided. The cathode active material is obtained by mixing a zirconium-containing lithium cobalt composite oxide containing zirconium as a sub-component element in a first lithium cobalt composite oxide expressed by a for... | 10/28/2008 |
| 7438994 | Non-aqueous electrolyte secondary battery A non-aqueous electrolyte secondary battery has a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte solution. The positive electrode has a theoretical capacity per unit area from 3.0 to 4.5 mAh/cm2. The non-aqueous elect... | 10/21/2008 |
| 7438991 | Nonaqueous electrolyte secondary cell and method for charging same The invention provides a non-aqueous electrolyte secondary cell that has high capacity and excels in cycle characteristics. The non-aqueous electrolyte secondary cell functions stably at a high potential of from 4.4 to 4.6 V with respect to lithium and inhibits the ... | 10/21/2008 |
| 7435510 | Nonaqueous electrolyte secondary battery A nonaqueous electrolyte secondary battery comprising a positive electrode containing a positive active material, a negative electrode containing a negative active material and a nonaqueous electrolyte, wherein a lithium transition metal complex oxide A formed by al... | 10/14/2008 |
