Patent application number | Description | Published |
20090202912 | ALL SOLID STATE SECONDARY BATTERY - This is to provide an all solid state secondary battery which can be produced by an industrially employable method capable of mass-production and has excellent secondary battery characteristics. | 08-13-2009 |
20100003592 | ALL SOLID STATE SECONDARY BATTERY - This is to provide an all solid state secondary battery which can be produced by an industrially employable method capable of mass-production and has excellent secondary battery characteristics. | 01-07-2010 |
20100216032 | LITHIUM ION RECHARGEABLE BATTERY AND PROCESS FOR PRODUCING THE LITHIUM ION RECHARGEABLE BATTERY - Conventional ion rechargeable batteries having an electrode layer on an electrolyte layer suffer from an impurity layer formed at the interface, degrading performance. Conventional batteries with no such impurity layer have a problem of weak interface bonding. In the present invention, in a baking process step after an electrode layer is laminated on an electrolyte layer, materials for an electrode layer and an electrolyte layer are selected such that an intermediate layer formed of a reaction product contributing to charging and discharging reactions is formed at the interface of the electrode layer and the electrolyte layer. In addition, a paste that an active material is mixed with a conductive material at a predetermined mixing ratio is used to form a positive electrode layer and a negative electrode layer. Reductions in electrode resistance and interface resistance and improvement of charging and discharging cycle characteristics are made possible. | 08-26-2010 |
20120015234 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME - A conventional, multilayer, all-solid-state, lithium ion secondary battery where an electrode layer and an electrolyte layer are stacked has a problem that it has a high interface resistance between the electrode layer and the electrolyte layer and has a difficulty in increasing the capacity of the battery. A battery has been manufactured by applying pastes of a mixture of an active material and a solid electrolyte to form electrode layers and baking a laminate of electrode layers and electrolyte layers at a time. As a result, a matrix structure including the active material and the solid electrolyte has been formed in the electrode layers, so that a battery with a large capacity and a reduced interface resistance between the electrode layer and the electrolyte layer has been successfully achieved. | 01-19-2012 |
20120064406 | ELECTRODE MATERIAL, METHOD FOR PRODUCING SAME, AND LITHIUM ION SECONDARY BATTERY - Secondary batteries for automobiles require good input/output characteristics and low internal resistance. Conventionally, the surface of an active material is coated with metal particles to reduce the internal resistance of a battery, but without achieving remarkable improvement in the conductivity of the active material or decreasing the internal resistance of the battery since an oxide film is formed on the metal particle surfaces. The present electrode material is produced by mixing and dispersing an active material and a metal source compound, then depositing metal particles on the surface of the active material by thermal decomposition, vapor phase reduction, liquid phase reduction or a chemical reaction combining any of these. Since an oxide film is not formed on the metal particles, an electrode material having high conductivity is obtained. The electrode material decreases the internal resistance of a battery and improves the input/output characteristics of a battery. | 03-15-2012 |
20120276439 | LITHIUM ION SECONDARY BATTERY - It is difficult to display the polarity of terminal electrodes of lithium ion batteries. With conventional lithium ion secondary batteries, since different materials are employed for the active substances that make up a positive electrode and a negative electrode, problems arise if the polarities of the electrodes are mistaken when the battery is installed. A battery has been developed using an active substance material functioning as a secondary battery even when the same material is used for the active substances that make up the positive electrode and the negative electrode, and a non-polar secondary battery has been produced. With no distinction between the terminal electrodes, attention does not need to be paid to the direction of installation, thereby simplifying the installation step. Furthermore, since there is no need to manufacture a positive electrode layer and a negative electrode layer separately, the step for manufacturing the battery is also simplified. | 11-01-2012 |
20130017435 | LITHIUM ION SECONDARY BATTERY AND ELECTRONIC DEVICEAANM Sato; HiroshiAACI NiigataAACO JPAAGP Sato; Hiroshi Niigata JPAANM Sasagawa; HiroshiAACI NiigataAACO JPAAGP Sasagawa; Hiroshi Niigata JPAANM Kato; RiekoAACI NiigataAACO JPAAGP Kato; Rieko Niigata JPAANM Takahashi; TetsuAACI NiigataAACO JPAAGP Takahashi; Tetsu Niigata JPAANM Fujita; TakayukiAACI NiigataAACO JPAAGP Fujita; Takayuki Niigata JP - Provided is a lithium ion secondary battery including a laminated body formed by laminating a first electrode layer and a second electrode layer on each other via an electrolytic region, wherein the first electrode layer and the second electrode layer include the same active material, and the active material is Li | 01-17-2013 |
20130017454 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING SAMEAANM Sato; HiroshiAACI NiigataAACO JPAAGP Sato; Hiroshi Niigata JPAANM Sasagawa; HiroshiAACI NiigataAACO JPAAGP Sasagawa; Hiroshi Niigata JPAANM Fuji; MegumiAACI NiigataAACO JPAAGP Fuji; Megumi Niigata JPAANM Kato; RiekoAACI NiigataAACO JPAAGP Kato; Rieko Niigata JPAANM Fujita; TakayukiAACI NiigataAACO JPAAGP Fujita; Takayuki Niigata JP - Disclosed is a lithium ion secondary battery that has a simple structure, is easily produced, and wherein short circuits do not arise. The lithium ion secondary battery comprises an active material being contained in a matrix comprising a laminated body that includes a positive current collector and a negative current collector which are laminated on each other via a solid electrolyte layer, the solid electrolyte layer includes an active material in a matrix made of solid electrolyte, and a ratio of the volume of the solid electrolyte and the volume of the active material being 90:10-65:35. Also, the active material may also be contained in a matrix of a conductive substance of the positive current collector and/or the negative current collector. | 01-17-2013 |
20140015173 | LITHIUM ION RECHARGEABLE BATTERY AND PROCESS FOR PRODUCING THE LITHIUM ION RECHARGEABLE BATTERY - Conventional ion rechargeable batteries having an electrode layer on an electrolyte layer suffer from an impurity layer formed at the interface, degrading performance. Conventional batteries with no such impurity layer have a problem of weak interface bonding. In the present invention, in a baking process step after an electrode layer is laminated on an electrolyte layer, materials for an electrode layer and an electrolyte layer are selected such that an intermediate layer formed of a reaction product contributing to charging and discharging reactions is formed at the interface of the electrode layer and the electrolyte layer. In addition, a paste that an active material is mixed with a conductive material at a predetermined mixing ratio is used to form a positive electrode layer and a negative electrode layer. Reductions in electrode resistance and interface resistance and improvement of charging and discharging cycle characteristics are made possible. | 01-16-2014 |
20140220393 | LITHIUM ION SECONDARY BATTERY - A battery using an active material that can function as a secondary battery has been developed by using the same material as active material of the positive electrode and the negative electrode, and a nonpolar secondary battery has been constructed. Because the terminal electrodes are not distinguished, there is no need to be aware of the mounting direction, so that the mounting process can be simplified. Also, because the positive layer and the negative layer do not need to be separately constructed, the battery manufacturing process can be simplified. Further, by connecting the nonpolar secondary batteries in series and modifying the connection of the lead-out electrodes extending from the points of connection, a battery with a different output voltage or a different battery capacity can be configured. | 08-07-2014 |