| Patent application number | Description | Published |
|---|
| 20090208846 | Method of increasing charge-discharge capacity of nonaqueous electrolyte secondary battery - Method of increasing charge-discharge capacity of a nonaqueous electrolyte secondary battery including a positive electrode containing a positive active material, a negative electrode containing a negative active material other than metallic lithium and a nonaqueous electrolyte. The battery is charged at an end-of-charge voltage of at least 4.3V. The positive active material includes lithium cobaltate in which Zr and Mg are contained by mixing their source materials in the preparation of the positive active material by a heat treatment, the Zr and Mg being contained in the lithium cobaltate in a total amount of not greater than 3 mole %, the Zr after heat treatment being present as particles of a Zr-containing compound that are sintered with particle surfaces of the lithium cobaltate, and the Zr being detected in the particles of the Zr-containing compound but not in the lithium cobaltate particles. | 08-20-2009 |
| 20090239146 | Non- Aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery includes: a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material; and a non-aqueous electrolyte having lithium ion conductivity. The positive electrode includes a lithium-containing transition metal oxide having a layered structure and being represented by the general formula Li | 09-24-2009 |
| 20090305136 | Non-aqueous electrolyte secondary battery and method of manufacturing the same - A non-aqueous electrolyte secondary battery has a positive electrode ( | 12-10-2009 |
| 20090325077 | 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 or as the negative electrode active material, a mixture containing molybdenum dioxide and lithium titanate in a weight ratio (molybdenum dioxide:lithium titanate) of 90:10 to 50:50 is used. | 12-31-2009 |
| 20100086848 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - In a nonaqueous electrolyte secondary battery and an active material for a nonaqueous electrolyte secondary battery, the nonaqueous electrolyte secondary battery includes: a positive electrode containing a positive-electrode active material; a negative electrode containing a negative-electrode active material; and a nonaqueous electrolyte, wherein molybdenum dioxide whose particles have an average aspect ratio of two or less is used as the positive-electrode active material or the negative-electrode active material where the aspect ratio is the ratio between the major axis length and the minor axis length of a particle-equivalent ellipse equivalent to the cross-sectional area or the two-dimensional projection image of each of the observed particles (major axis length/minor axis length), the particle-equivalent ellipse being an ellipse having the same area and the same first and second moments as the observed particle. | 04-08-2010 |
| 20100112450 | 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 mixture of a lithium transition metal complex oxide A obtained by incorporating at least Zr and Mg into LiCoO | 05-06-2010 |
| 20100255384 | Nonaqueous electrolyte secondary battery - 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 electrolyte solution, the battery being characterized in that the lithium cobalt oxide contains a group IVA element selected from the group consisting of Ti, Zr and Hf and a group IIA element of the periodic table, the nonaqueous electrolyte solution contains 0.2-1.5% by weight of a sulfonyl-containing compound and preferably further contains 0.5-4% by weight of vinylene carbonate. | 10-07-2010 |
| 20120013050 | Method of manufacturing a non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery having a positive electrode ( | 01-19-2012 |
