Patent application number | Description | Published |
20100119947 | METHOD FOR FORMING CATHODE ACTIVE MATERIAL POWDER FOR LITHIUM SECONDARY CELL, AND CATHODE ACTIVE MATERIAL POWDER FOR LITHIUM SECONDARY CELL PREPARED USING THE METHOD - Provided are a method for forming a cathode active material powder for a lithium secondary cell, and a cathode active material powder prepared using the method. According to the method, a coating layer consisting of a combination of a water-soluble polymer and a metal oxide may be formed on the particle surface of the cathode active material, thereby forming a uniform thickness of the coating layer. Thus, the elution of manganese may be prevented, thereby improving the capacity of the cathode active material and providing excellent cycle characteristics. | 05-13-2010 |
20110045337 | VACUUM-SEALING-TYPE FLEXIBLE-FILM PRIMARY BATTERY AND METHOD OF MANUFACTURING THE SAME - Provided are a vacuum-sealing-type flexible-film primary battery and a method of manufacturing the same. The primary battery includes a battery assembly comprising a positive electrode plate including a positive electrode collector having a first conductive carbon layer disposed on a surface-treated inner surface of a first pouch and a positive electrode layer disposed on the first conductive carbon layer of the positive electrode collector, a negative electrode plate including a negative electrode collector having a second conductive carbon layer disposed on a surface-treated inner surface of a second pouch and a negative electrode layer disposed on the second conductive carbon layer of the negative electrode collector, and an adhesion/post-injection polymer electrolyte layer interposed between the positive electrode plate and the negative electrode plate, wherein the battery assembly is completely sealed. The flexible-film primary battery may employ the pouch as a collector film to improve flexibility. Also, the flexible-film primary battery may be completely sealed using the pouch to improve a retention period and cell performance. Furthermore, the flexible-film primary battery may be manufactured using a screen printing technique, thereby facilitating a roll-to-roll sequential process. | 02-24-2011 |
20110143200 | METHOD OF MANUFACTURING CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND 1-D NANOCLUSTER CATHODE ACTIVE MATERIAL WITH CHESTNUT TYPE MORPHOLOGY OBTAINED BY THE METHOD - Provided are a method of manufacturing a cathode active material for a lithium battery, and a cathode active material obtained by the method. The method includes forming a precursor of a one-dimensional nanocluster manganese dioxide with a chestnut-type morphology, inserting lithium into the formed precursor and synthesizing a one-dimensional nanocluster cathode active material particle with a chestnut morphology, coating a water-soluble polymer on a surface of the cathode active material particle, adsorbing a metal ion to the surface of the cathode active material particle coated with the water-soluble polymer, and sintering the cathode active material particle to obtain the one-dimensional nanocluster cathode active material with a chestnut morphology. The cathode active material manufactured by the above method is a one-dimensional nanocluster with a chestnut-type morphology, which has a uniform-thick metal oxide layer on its surface, thereby ensuring an improved capacity of the cathode active material and an excellent cycle characteristic. | 06-16-2011 |
20110272018 | DYE SENSITIZED SOLAR CELL - Provided is a dye-sensitized solar cell (DSC). The DSC including a working electrode and a counter electrode facing the working electrode includes a polymer film having a mirror reflection characteristic and attached to the outside of the counter electrode. Since the polymer film having a mirror reflection characteristic is employed, use of light can be increased, and incident photon-to-current conversion efficiency (IPCE) can be improved. | 11-10-2011 |
20120058378 | POUCH-TYPE FLEXIBLE FILM BATTERY AND METHOD OF MANUFACTURING THE SAME - Provided are a pouch-type flexible film battery and a method of manufacturing the same. The film battery includes a cathode structure including a cathode pouch, a cathode conductive carbon layer, and a cathode layer, an anode structure including an anode pouch, an anode conductive carbon layer, and an anode layer, and a polymer electrolyte layer between the cathode and anode structures. The polymer electrode layer may be a gel-type electrolyte including a cellulose-based polymer. | 03-08-2012 |
20120107695 | LITHIUM RECHARGEABLE BATTERY - Provided is a lithium rechargeable battery including: a cathode plate including a cathode current collector layer and a cathode layer; an anode plate spaced from the cathode plate, the cathode plate including an anode current collector layer and an anode layer; and a polymer electrolyte disposed between the cathode plate and the anode plate, wherein at least one of the cathode layer and the anode layer includes a mixed cathode active material or a mixed anode active material. | 05-03-2012 |
20120324721 | VACUUM-SEALING-TYPE FLEXIBLE-FILM PRIMARY BATTERY AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing a flexible-film primary battery includes forming a first conductive carbon layer on a surface-treated inner surface of a first pouch film to form a positive electrode collector, and forming a positive electrode layer on the first conductive carbon layer to form a positive electrode plate. A second conductive carbon layer is formed on a surface-treated inner surface of a second pouch film to form a negative electrode collector, and a negative electrode layer is formed on the second conductive carbon layer to form a negative electrode plate. An adhesion/post-injection polymer electrolyte layer is inserted between the positive electrode plate and the negative electrode plate to manufacture a battery assembly. An electrolyte is injected into the polymer electrolyte layer of the battery assembly. The battery assembly is sealed completely to form a primary battery. | 12-27-2012 |
20130157106 | LITHIUM METAL POWDER-CARBON POWDER COMPOSITE ANODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM METAL SECONDARY BATTERY COMPRISING THE SAME - Provided are an anode in which lithium metal powder and carbon powder are physically mixed with each other to form a composite and the composite is applied as an anode layer, and a lithium metal secondary battery including the anode. The anode of the present invention may suppress the formation of lithium dendrites and the change in volume of cells generated in a rechargeable battery which uses a lithium metal anode and significantly improve the cycle life-span of a lithium metal secondary battery by physically mixing lithium metal particles and carbon particles having an equivalent average particle diameter with each other to be applied as an anode layer. | 06-20-2013 |
20130337337 | SOLID POLYMERIC ELECTROLYTES, METHODS OF FABRICATING THE SAME, AND LITHIUM BATTERY INCLUDING THE SAME - Provided are a solid polymeric electrolyte and a lithium battery with the same. The electrolyte paste may be formed by controlling composition ratio, dispersion, and thickness of the electrolyte paste to have physical properties suitable for the printing process. The use of the printing process enables to simplify a process of fabricating the lithium battery. In addition, the lithium battery provided with the solid polymeric electrolyte can exhibit improved performance (for example, in electrode-electrolyte interface stability and an internal short property), regardless of the shape of the solid polymeric electrolyte. For example, the lithium battery may exhibit improvement in interface stability between the electrode and the electrolyte and be configured to suppress an internal short therein. | 12-19-2013 |
20140162136 | METHOD OF FORMING LITHIUM-ALUMINUM-TITANIUM PHOSPHATE - Disclosed are methods of forming lithium-aluminum-titanium phosphate. The method includes providing a precursor solution including a titanium compound and an aluminum compound, forming an intermediate using a hydrothermal reaction process performed on the precursor solution, adding a lithium compound and a phosphate compound to the intermediate, and firing a mixture of the lithium compound, the phosphate compound, and the intermediate. | 06-12-2014 |
20140370396 | METHOD OF PREPARING LITHIUM PHOSPHATE-BASED SOLID ELECTROLYTE - A method of preparing a lithium phosphate-based solid electrolyte according to an embodiment of the present invention may include preparing a precursor solution which includes a lithium compound, a phosphate compound, and an aluminum compound, forming a first intermediate by performing a hydrothermal reaction process on the precursor solution, forming a second intermediate by calcinating the first intermediate, and crystallizing the second intermediate. The precursor solution may further include a metal compound or a metalloid compound. The lithium phosphate-based solid electrolyte of the present invention may have high ionic conductivity and high purity. | 12-18-2014 |
20140370398 | LITHIUM BATTERY AND METHOD OF PREPARING THE SAME - A method of preparing a lithium battery according to an embodiment of the present invention may include preparing a mixture including lithium phosphorus sulfide and metal sulfide, preparing an electrode composite by applying a physical pressure to the mixture, wherein the electrode composite includes lithium phosphorus sulfide, lithium metal sulfide, and amorphous sulfide, preparing an electrode active layer by using the electrode composite, forming an electrode current collector on one side of the electrode active layer, and forming an electrolyte layer on another side of the electrode active layer. | 12-18-2014 |
20150024124 | METHOD FOR MANUFACTURING SOLID ELECTROLYTE - Provided is a method for manufacturing a solid electrolyte including preparing a preparation solution by dissolving first polymers and second polymers in a cosolvent which includes a first cosolvent and a second cosolvent, preparing a mixture solution by adding a lithium solution to the preparation solution, preparing an electrolyte paste by removing the second cosolvent in the mixture solution, and forming an electrolyte film by coating the electrolyte paste on a substrate. | 01-22-2015 |
20150024281 | METHOD FOR MANUFACTURING SULFIDE-BASED SOLID ELECTROLYTE - Provided is a method for manufacturing a sulfide-based solid electrolyte including preparing a precursor comprising lithium sulfide, germanium sulfide, aluminum sulfide, phosphorus sulfide, and sulfur, conducting a mixing process of the precursor to prepare a mixture, and crystallizing the mixture to form a compound represented by Li | 01-22-2015 |