| Patent application number | Description | Published |
|---|
| 20090023077 | ALKALINE BATTERY - An alkaline battery of the present invention includes a positive electrode, a negative electrode, a separator, and an alkaline electrolyte. The positive electrode includes nickel oxyhydroxide and manganese dioxide as a positive electrode active material. The negative electrode includes at least zinc as a negative electrode active material. The content of indium in the negative electrode active material is 0.02 wt % or less. | 01-22-2009 |
| 20090053604 | ALKALINE PRIMARY BATTERY - An alkaline primary battery of the present invention includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, a separator interposed between the positive electrode and the negative electrode, and an electrolyte. The negative electrode further includes at least one compound selected from the group consisting of a tetramethylammonium compound, a tetraethylammonium compound, and a tetrapropylammonium compound. | 02-26-2009 |
| 20090098454 | SPHERICAL ELECTROLYTIC MANGANESE DIOXIDE AND ALKALINE PRIMARY BATTERY USING THE SAME - An object is to provide an electrolytic manganese dioxide with optimized properties, and a high capacity alkaline primary battery with excellent high-rate discharge characteristics. Disclosed is a spherical electrolytic manganese dioxide having an average circularity of 0.89 or more. The loss on heating from 200 to 400° C. of the spherical electrolytic manganese dioxide is preferably 2.5% by weight or more. Also disclosed is an alkaline primary battery including the above-described spherical electrolytic manganese dioxide as a positive electrode active material. | 04-16-2009 |
| 20090197169 | ALKALINE BATTERY - An alkaline battery comprising a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode; and an alkaline electrolyte, wherein the positive electrode includes manganese dioxide and graphite; the cumulative pore volume of pores with diameters of 3 to 5 nm in the manganese dioxide is X (cm | 08-06-2009 |
| 20090263710 | AA ALKALINE BATTERY - In an AA alkaline battery, an opening of a battery case is sealed by a gasket. The battery case houses a positive electrode, a negative electrode, a separator, and an alkaline electrolyte. The positive electrode contains manganese dioxide having a potential of higher than or equal to 270 mV measured by using mercurous oxide (Hg/HgO) as a reference electrode in 40 wt % of a potassium hydroxide aqueous solution. The negative electrode contains 4.0 g or more of zinc. The gasket has a hydrogen gas permeability coefficient, per one gasket, in the range from 6×10 | 10-22-2009 |
| 20090263720 | AA ALKALINE BATTERY AND AAA ALKALINE BATTERY - An AA alkaline battery includes a positive electrode containing larger than or equal to 9.30 g of manganese dioxide. The cumulative pore volume of pores having diameters from 0.97 μm to 10.2 μm, both inclusive, is in the range from 0.0035 ml/g to 0.0070 ml/g, both inclusive, in measurement of pore size distribution in the positive electrode performed by mercury intrusion porosimetry. | 10-22-2009 |
| 20090269660 | ALKALINE BATTERY - An alkaline dry battery includes a positive electrode | 10-29-2009 |
| 20100068620 | ALKALINE BATTERY - An alkaline battery includes a positive electrode containing as a positive electrode active material manganese dioxide and nickel oxyhydroxide, and when the manganese dioxide is heated, a weight reduction percentage of the manganese dioxide at a temperature within a range of 100° C. or more and 400° C. or less is 3.8 wt % or more. When the manganese dioxide is subjected to X-ray powder diffraction measurement, a peak position of a diffraction plane with Miller indices of (110) is 20.5 degrees or more and 21.7 degrees or less and a ratio (I(130)/I(021)) of a peak intensity I (130) of a diffraction plane with miller indices (130) to a peak intensity I(021) of a diffraction plane with Muller indices of (021) is 0.1 or less. | 03-18-2010 |
| 20100129716 | MERCURY-FREE ALKALINE DRY BATTERY - A mercury-free alkaline battery which can sufficiently suppress generation due to zinc corrosion and Fe contamination, and can exhibit a small amount of a voltage drop after pulse discharge in a low-temperature atmosphere, is provided. | 05-27-2010 |
| 20100183916 | ALKALINE PRIMARY BATTERY - An alkaline primary battery provided with a positive electrode containing a positive electrode active material and graphite, a negative electrode containing a negative electrode active material, a separator, and an alkaline electrolyte, the positive electrode active material containing manganese dioxide, the alkaline electrolyte containing zinc oxide, and the positive electrode containing metatitanic acid. Due to this, in a battery in which an alkaline electrolyte contains zinc oxide, productions of hetaerolite and the like at the positive electrode and depositions of titanium compound, zinc oxide, and the like on the inner face of a battery case are suppressed, and thus, excellent discharge performance and storage characteristics can be obtained. | 07-22-2010 |
| 20100203382 | ALKALINE BATTERY - An alkaline battery includes: a positive electrode | 08-12-2010 |
| 20110123847 | ALKALINE BATTERY - An alkaline battery which is superior in high-rate discharge characteristics and in moderate- and low-rate discharge characteristics is provided. | 05-26-2011 |
| 20110143210 | MERCURY-FREE ALKALINE DRY BATTERY - The present invention provides a mercury-free alkaline dry battery which is improved in discharge characteristic at low cost. The mercury-free alkaline dry battery includes: a positive electrode; a negative electrode; and a separator, wherein a negative electrode active material contains short fibrous zinc particles, and each of the short fibrous zinc particles has a length of 1 mm to 50 mm, both inclusive, a major diameter of 2 μm to 1 mm, both inclusive, and a specific surface area of 50 cm | 06-16-2011 |
| 20110151334 | MERCURY-FREE ALKALINE DRY BATTERY - The present invention provides a mercury-free alkaline dry battery in which a utilization ratio of zinc as a negative electrode active material is increased to improve a discharge characteristic, the mercury-free alkaline dry battery including: a positive electrode; a negative electrode; and a separator, wherein almond-shaped zinc particles | 06-23-2011 |
