Patent application number | Description | Published |
20080299455 | ELECTRIC STORAGE DEVICE AND FABRICATING METHOD THEREFOR - An electrode laminate unit | 12-04-2008 |
20080299459 | FABRICATION METHOD OF ELECTRODE MATERIAL, ELECTRODE MATERIAL, AND NON-AQUEOUS LITHIUM ION SECONDARY BATTERY - The ions other than a lithium ion and having a greater ion radius is interposed, before the lithium ion is doped, as an interlayer securing member in a vanadium oxide having a layered crystal into which the lithium ion can be doped. Since the interlayer securing member is interposed, the dope or dedope of the lithium ion into or from the vanadium oxide afterward can smoothly be performed. A sodium ion or the like can be employed as the interlayer securing member. | 12-04-2008 |
20090104534 | ELECTRODE MATERIAL, METHOD OF MANUFACTURING THEREOF AND NONAQUEOUS LITHIUM SECONDARY BATTERY - A crystal structure is provided to improve a characteristic of an electrode material, such as vanadium oxide. In the crystal structure, an amorphous state and a layered crystal state coexist at a predetermined ratio in a layered crystalline material such as vanadium oxide. In the layered crystalline material having such a layered crystal structure, layered crystal particles having a layer length L | 04-23-2009 |
20090246633 | MANUFACTURING METHOD OF ELECTRODE MATERIAL, AND ELECTRIC STORAGE DEVICE - When a layered crystal material of vanadium pentoxide that can be used as a positive electrode active material is manufactured, a sulfur-containing organic material is not used as a raw material in the present invention. Therefore, uncertain adhesion of the sulfur-containing organic material to the layered crystal material is eliminated. The property of the suspension containing a vanadium compound and plural lithium compounds such as lithium sulfide and lithium hydroxide is adjusted by using these lithium compounds. By this adjustment, the pentavalence of the vanadium ions is controlled to be a desired ratio. Consequently, an active material having reproducibility can be manufactured. First discharge energy of a lithium ion secondary battery using the active material can be enhanced. | 10-01-2009 |
20090246634 | LAYERED CRYSTAL MATERIAL, MANUFACTURING METHOD OF ELECTRODE MATERIAL, AND ELECTRIC STORAGE DEVICE - A physical property of a suspension into which plural lithium materials, such as a lithium sulfide, lithium hydroxide, etc., and a vanadium material are dissolved is adjusted by using the plural lithium materials. According to the adjustment, the valence of pentavalent vanadium ions is controlled to be a desired ratio. A material having the obtained layered crystal particles and an amorphous part is used as a starting material, and this material is subject to a heat treatment. With this process, the layered crystal particles grow, while the amorphous part is decreased. Consequently, it is confirmed that the rate of capacity deterioration is improved. | 10-01-2009 |
20090269274 | PRODUCTION METHOD OF LAYERED CRYSTAL MATERIAL - An ammonium metavanadate is heat-treated to 500° C. or less at a predetermined rate of temperature rise, whereby a microcrystal particle of a vanadium pentoxide can be formed. According to the production method described above, a crystal of a nano-vanadium having a layer length of 100 nm or less can be formed. The nano-vanadium formed by the production method described above can effectively be used for an electrode of an electric storage device such as a battery. The production method according to the present invention can be linked to a conventional production method in which an ammonium metavanadate can be formed in the course of the method, whereby the present invention can smoothly be embodied. | 10-29-2009 |
20100173184 | LITHIUM ION SECONDARY BATTERY - It has been found that when the potentials of the positive electrode and the negative electrode of the lithium ion secondary battery after the electrodes are short-circuited are each within a predetermined range, the battery produces high energy density. That is the present invention provides a lithium ion secondary battery having a positive electrode, a negative electrode and an electrolyte containing a lithium salt and an aprotic organic in which a positive electrode active material is a material allowing lithium ions and/or anions to be reversibly doped thereinto, and a negative electrode active material is a material allowing lithium ions to be reversibly doped thereinto, and the potentials of the positive electrode and the negative electrode after the positive electrode and the negative electrode are short-circuited are each selected to be within a range from 0.5 V to 2.0 V. | 07-08-2010 |
20100330431 | ELECTRIC STORAGE DEVICE AND FABRICATING METHOD THEREFOR - An electrode laminate unit | 12-30-2010 |
20110001084 | ELECTRODE MATERIAL AND LITHIUM ION SECONDARY BATTERY - The electrode material according to the present invention has a crystal phase in the form of a lattice containing lithium vanadium oxide, such as Li | 01-06-2011 |
20110108760 | ELECTRODE MATERIAL, PRODUCTION METHOD OF SAME AND LITHIUM ION SECONDARY BATTERY - An electrode material uses, as an active material, sodium vanadium oxide represented by Na | 05-12-2011 |
20130071749 | POSITIVE ELECTRODE ACTIVE MATERIAL PRODUCTION METHOD, POSITIVE ELECTRODE, AND STORAGE DEVICE - There is provided a positive electrode active material production method, a positive electrode, and a storage device. A production method of a positive electrode active material having a LiVPO | 03-21-2013 |