Patent application number | Description | Published |
20120113564 | Lithium ion capacitor and method of fabricating the same - There are provided a lithium ion capacitor and a method of fabricating the same. The lithium ion capacitor includes: a first electrode made of a first electrode material including activated carbon, a water-soluble metal oxide, and a water based binder; and a second electrode disposed to be faced to the first electrode, having a separating film therebetween and made of a second electrode material capable of reversibly containing lithium ions. Therefore, the lithium ion capacitor having improved energy density and output density may be provided, and the fabricating method thereof having environmentally-friendly characteristics and a competitive pricing may be provided. | 05-10-2012 |
20120293912 | HYBRID CAPACITOR - Disclosed herein is a hybrid capacitor as a super capacitor including a positive electrode, a negative electrode, a separator, and an electrolyte solution, wherein the positive electrode includes a positive electrode active material including a material obtained by mixing a non-porous carbon material and a porous carbon material, and a positive electrode collector. | 11-22-2012 |
20120293913 | HYBRID CAPACITOR - Disclosed herein is a hybrid capacitor including: a first structure including a cathode containing activated carbon and an anode containing lithium; and a second structure including activated carbon layers formed on both surfaces of a current collector. With the hybrid capacitor, characteristics of an LIC and characteristics of an EDLC are implemented in a single cell, thereby making it possible to increase energy density and improve output characteristics. | 11-22-2012 |
20130037756 | ELECTRODES FOR ELECTROCHEMICAL CAPACITOR AND ELECTROCHEMICAL CAPACITOR INCLUDING THE SAME - An electrode for an electrochemical capacitor including a carbon material that is doped and two types of conductive materials with different particle sizes, and an electrochemical capacitor including the same. The doped carbon material is used as the active material and the two types of conductive materials with different particle sizes are added between the active materials with a relatively large particle size, so that the electrode with high density can be prepared by increasing the amount of active material per unit volume, and can be efficiently used in a low resistance and high output electrochemical capacitor by increasing the filling density of the conductive material with excellent conductivity. | 02-14-2013 |
20130038984 | COMPOSITION FOR ELECTRODE ACTIVE MATERIAL SLURRY AND ELECTROCHEMICAL CAPACITOR INCLUDING ELECTRODE USING THE SAME - A composition for an electrode active material slurry and an electrochemical capacitor including an electrode using the same. The electrochemical capacitor includes: an electrode having a current collector coated with the composition for an electrode active material slurry including an electrode active material, a material including a nonpolar hydrophobic functional group, and a surfactant; a separator; and an organic electrolyte. Additives improving flowability of the electrode active material slurry and wettability to the electrolyte, thereby increase an effective electrode area contacted with the electrolyte and decrease inner resistance of the electrode, with the result that there can be provided an electrochemical capacitor having higher capacitance and lower electrode resistance when the active material and conductive material are added in the same amount. | 02-14-2013 |
20130050903 | ELECTRODES, AND ELECTROCHEMICAL CAPACITORS INCLUDING THE SAME - Electrodes and electrochemical capacitors including the same including an electrode active material layer having two layers or more formed on a current collector, wherein the electrode active material layer has a gradient of the specific surface area value to the electric conductivity along a thickness direction of a current collector. Exemplary embodiments manufacture the electrodes having the gradient of the specific surface area value to the electricity conductivity along the thickness direction of the current collector by forming the electrode active material layer having compositions in which a kind of electrode active materials and conductive materials are different along the thickness direction of the current collector. The exemplary embodiments can increase the capacitance of the electrochemical capacitor including the electrode and lower the electric resistance thereof, by appropriately controlling the resistance and capacitance value of the electrode. | 02-28-2013 |
20130058008 | ELECTRODE ACTIVE MATERIAL COMPOSITION AND ELECTROCHEMICAL CAPACITOR INCLUDING THE SAME - An electrode active material composition, including: an electrode active material; a ketjen black subjected to hydrophilization treatment; and a water-based solvent, and an electrochemical capacitor including an electrode having a current collector coated with the composition. A hydrophilic group is attached on a surface of the ketjen black conducting powder having very strong hydrophobicity, through hydrophilic treatment, and thus, dispersibility of an active material of a carbon material such as activated carbon, and the conducting agent, can be improved when an electrode using a water-based solvent is prepared, with the result that an electrode having improved flowability and uniformity of electrode active material slurry can be prepared. | 03-07-2013 |
20130058009 | METAL CURRENT COLLECTOR, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL CAPACITORS WITH SAME - The present invention relates to a metal current collector including a metal substrate having grooves on a surface thereof, a carbon buffer layer formed on the metal substrate, and a conductive layer formed on the carbon buffer layer, a method for preparing the same, and electrochemical capacitors comprising the same. According to the present invention, a metal current collector including a metal substrate having grooves on a surface thereof, a carbon buffer layer formed on the metal substrate, and a conductive layer formed on the carbon buffer layer has a large surface area and low electrical resistance. This metal current collector can be effectively used in electrochemical capacitors with high capacity and high output characteristics by improving contact characteristics with an active material layer. | 03-07-2013 |
20130058010 | METAL CURRENT COLLECTOR, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL CAPACITORS WITH SAME - A metal current collector including a metal substrate having grooves formed along a triple junction line of a surface thereof and a conductive layer formed on the metal substrate, a method for preparing the same, and electrochemical capacitors with same. A metal current collector including a metal substrate having grooves formed along a triple junction line of a surface thereof and a conductive layer formed on the metal substrate has a large surface area and low electrical resistance. This metal current collector can be effectively used in electrochemical capacitors with high capacity and high output characteristics by improving contact characteristics with an active material layer. | 03-07-2013 |
20130070389 | ELECTRODE FOR ENERGY STORAGE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an electrode for an energy storage and a method for manufacturing the same and provides a useful effect of improving resistance characteristics of an electrode for an energy storage by forming a trench of predetermined dimensions on a surface of a current collector, forming a conductive layer, which includes a conductive agent as much as possible, on the surface of the current collector, and forming an electrode layer including an electrode active material, a conductive agent, and a binder on the conductive layer. | 03-21-2013 |
20130100580 | ELECTRIC DOUBLE LAYER CAPACITOR - The present invention relates to an electric double layer capacitor including electrodes using a cathode current collector and an anode current collector with different thicknesses. | 04-25-2013 |
20130100581 | ELECTRIC DOUBLE LAYER CAPACITOR - The present invention relates to an electric double layer capacitor including: an anode formed by applying a conductive layer and an anode active material layer on an anode current collector; and a cathode including a cathode active material layer on a cathode current collector. | 04-25-2013 |
20130128412 | ELECTRODE FOR ENERGY STORAGE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an electrode for an energy storage and a method for manufacturing the same and provides a useful effect of improving resistance characteristics of an electrode for an energy storage and strengthening adhesion by forming trenches of predetermined dimensions on a surface of a current collector, forming a conductive layer, which includes a conductive agent as much as possible, on the surface of the current collector, and forming a bonding layer including an active material, a conductive agent, and a binder and an electrode layer including an active material and a binder on the conductive layer. | 05-23-2013 |
20130194724 | ELECTRODE, METHOD FOR FABRICATING THE SAME, AND ELECTROCHEMICAL CAPACITOR INCLUDING THE SAME - Disclosed herein are an electrode, a method for fabricating the same, and an electrochemical capacitor including the same, the electrode including an electrode current collector; a plurality of first active material layers made of a complex of graphene and carbon nanotubes (CNT) above the electrode current collector; and a plurality of second active material layers made of carbon nanofibers (CNF), each of the second active material layers being interposed between the first active material layers. According to the present invention, an electrochemical device having high capacitance and output can be provided by using materials such as graphene, carbon nanotubes (CNT), and carbon nanofibers (CNF), which have excellent specific surface area and electric conductivity, as an electrode active material, and thereby to fabricate an electrode having a multilayer structure. | 08-01-2013 |
20140375413 | METAL MAGNETIC POWDER AND METHOD FOR FORMING THE SAME, AND INDUCTOR MANUFACTURED USING THE METAL MAGNETIC POWDER - Disclosed herein is a metal magnetic powder, and the metal magnetic powder according to the exemplary embodiment of the present invention includes a soft magnetic core particle and a multilayer coating film covering the core particle and having a multilayer structure, the multilayer coating film including an oxide film formed by heat treating the core particle and an insulation film formed by coating a coating particle with respect to the core particle. | 12-25-2014 |