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Sunano, JP
Taizo Sunano, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20100266902 | NEGATIVE ELECTRODE MATERIAL FOR RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE, NEGATIVE ELECTRODE FOR RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE, RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE, AND PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON PARTICLES FOR ACTIVE MATERIAL FOR NEGATIVE ELECTRODE MATERIAL FOR RECHARGEABLE BATTERY WITH NONAQUEOUS ELECTROLYTE - This invention provides a negative electrode material for a rechargeable battery with a nonaqueous electrolyte, characterized in that the negative electrode material contains polycrystalline silicon particles as an active material, the particle diameter of crystallites of the polycrystalline silicon is not less than 20 nm and not more than 100 nm in terms of a crystallite size determined by the Scherrer method from the full width at half maximum of a diffraction line attributable to Si (111) around 2θ=28.4° in an x-ray diffraction pattern analysis, and the true specific gravity of the silicon particles is 2.300 to 2.320. | 10-21-2010 |
Taizo Sunano, Kobe City JP
| Patent application number | Description | Published |
|---|---|---|
| 20090214938 | Non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery has a positive electrode ( | 08-27-2009 |
| 20090246632 | Lithium secondary battery and method of manufacturing the same - A lithium secondary battery contains a negative electrode binder containing a polyimide resin having a structure represented by the following chemical formula (1), and the polyimide resin having a molecular weight distribution such that the weight ratio of a polyimide resin having a molecular weight of less than 100,000 and a polyimide resin having a molecular weight from 100,000 to less than 200,000 is from 50:50 to 90:10: | 10-01-2009 |
Taizou Sunano, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20090081556 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode and a non-aqueous electrolyte. The negative electrode comprises a negative electrode active material to be alloyed with lithium and the non-aqueous electrolyte comprises a non-aqueous solvent containing fluorinated cyclic carbonate and propyl acetate. | 03-26-2009 |
Taizou Sunano, Moriguchi-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080241646 | LITHIUM SECONDARY BATTERY - A lithium secondary battery has a wound electrode assembly ( | 10-02-2008 |
| 20080241647 | CYLINDRICAL LITHIUM SECONDARY BATTERY - A cylindrical lithium secondary battery includes a positive electrode ( | 10-02-2008 |
Taizou Sunano, Moriguchi-City JP
| Patent application number | Description | Published |
|---|---|---|
| 20080241703 | Nonaqueous electrolyte secondary battery - A nonaqueous electrolyte secondary battery which includes a positive electrode, a negative electrode and a separator stacked and wound in a cylindrical configuration, and which achieves a high energy density and superior cycle performance characteristics. | 10-02-2008 |
Taizou Sunano, Kobe-City JP
| Patent application number | Description | Published |
|---|---|---|
| 20100081063 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte dissolving a solute in a non-aqueous solvent wherein the negative electrode contains a negative electrode active material containing powdered silicon and/or silicon alloy and a binding agent, and the non-aqueous electrolyte contains a fluorinated cyclic carbonate represented by a general formula (1) below, and wherein when Li storage volume per unit area in the negative electrode during charging is determined as A and the theoretical maximum Li storage volume per unit area in the negative electrode is determined as B, a utilizing rate (%) of negative electrode as expressed by (A/B)×100 is 45% or less. | 04-01-2010 |
| 20110076534 | LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery | 03-31-2011 |
Taizou Sunano, Hyogo JP
| Patent application number | Description | Published |
|---|---|---|
| 20110151338 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention is made to improve charge-discharge cycle performances under high temperature environment in a non-aqueous electrolyte secondary battery using a negative electrode containing a negative electrode active material of particulate silicon and/or silicon alloy and a binding agent. | 06-23-2011 |
Taizou Sunano, Kobe-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100330424 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES AND LITHIUM SECONDARY BATTERY - A negative electrode ( | 12-30-2010 |
| 20110117431 | LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - A lithium secondary battery including an electrode assembly and a non-aqueous electrolyte impregnated in the electrode assembly, the electrode assembly containing a positive electrode, a negative electrode having a negative electrode current collector and a negative electrode mixture layer formed on the negative electrode current collector, the negative electrode mixture layer containing a binder and negative electrode active material particles, the negative electrode active material particles containing at least one of silicon and a silicon alloy, and a separator interposed between the negative electrode and the positive electrode. The binder contains a polyimide resin having a branch structure formed by imidizing a polyvalent amine having a valency of 3 or more and a tetracarboxylic dianhydride. | 05-19-2011 |