摘要:
The present invention belongs to the technical field of electrode foils, and discloses an electrode structure and preparation methods thereof. The electrode structure comprises a substrate and a sintered body, wherein the sintered body is formed on the surface of the substrate, and the sintered body is provided with cracks that are formed after the hydration treatment of the sintered body. The continuity of cracks of the electrode structure was good, and the preparation method is suitable for industrial production. On the one hand, the electrode structure with cracks can effectively increase the bending strength and reduce the stress during the winding process of the electrode structure, thereby reducing the risk of fracture during the application process; on the other hand, it can improve the flexural strength of the electrode structure while maintaining the original high electrostatic capacity and lower leakage current value of the electrode structure, without negatively affecting the performance of the electrode structure.
摘要:
Composite electrodes (300) are constructed with pressure-bonding techniques instead of an adhesive. A current collector (302) is made from aluminum foil roughed on both surfaces. The surfaces of the collector can be treated to enhance adhesion to the surfaces. Layers of film (306, 307) that includes active electrode material, such as activated carbon, are fabricated and pressure-bonded to the current collector using a calendar with heated rollers. The resulting composite sheet is then processed to shape electrodes, which can be used in electrical energy storage devices, including double layer capacitors.
摘要:
A stereostructure (11) includes a core portion (12), and a porous portion (13) located around the core portion (12). The porous portion (13) located inside a position (11a) which is inside from an outer edge (13a) of the porous portion (13) by 3/20 of a diameter of the stereostructure (11) in an arbitrary cross section of the stereostructure (11) has a void ratio per unit area of less than or equal to 80%.
摘要:
An object is to provide a method for manufacturing an aluminum plate having a plurality of through-holes in a thickness direction in which the locations of the through-holes are controlled and a manufacturing apparatus that is used in the method for manufacturing the aluminum plate. A method for manufacturing an aluminum plate of the present invention is a method for manufacturing an aluminum plate having a plurality of through-holes in a thickness direction, the method including a coating-forming step of forming a coating of an aluminum compound on a surface of an aluminum substrate having a thickness of 5 to 1,000 µm, a partial coating removal step of removing, out of the coating, the coating present on portions in which the through-holes need to be formed, and a through-hole-forming step of forming the through-holes in the aluminum substrate by carrying out an electrochemical melting treatment on the aluminum substrate after the partial coating removal step.
摘要:
An aluminum electrode in which a porous layer made of a sintered layer of aluminum powder having an average particle diameter of 1 µm to 10 µm is laminated in a thickness of 150 µm to 3000 µm on a surface of an aluminum core material is produced by chemical formation to produce an anode for an electrolytic capacitor. In this process, an organic acid immersion step of immersing the aluminum electrode in an organic acid aqueous solution containing dodecanoic acid, benzoic acid, propanedioic acid, butanedioic acid, (E)-2-butenedioic acid, 2-hydroxypropane-1,2,3-tricarboxylic acid, (E)-1-propene-1,2,3-tricarboxylic acid, or the like is carried out after a pure water boiling step and before a chemical formation step. In the chemical formation step, a phosphoric acid immersion step of immersing the aluminum electrode in an aqueous solution containing phosphate ions is carried out one or more times in the course of raising a film withstand voltage to a chemical formation voltage.
摘要:
A capacitor has a positive electrode 10, a negative electrode 20, and a solid electrolyte layer arranged between the electrode layers 10 and 20. At least one 10 (20) of the electrode layers of this capacitor 100 has an Al porous body 11, and an electrode body 12 (13) held in this Al porous body 11 to polarize the electrolyte. The oxygen content in the surface of the Al porous body 11 is 3.1% by mass or less. The matter that the oxygen content in the surface of the Al porous body 11 is 3.1% by mass or less is equal to the matter that a high-resistance oxide film is hardly formed on the surface of the Al porous body 11. Thus, this Al porous body 11 makes it possible to make the current collector area of the electrode layer 10 (20) large so that the capacitor 100 can be improved in capacity.
摘要:
The present invention provides a method for producing a capacitor element having good LC characteristics, wherein, after a chemical conversion process to form a dielectric layer on the surface layer of an anode body obtained by forming a powder mainly comprising tungsten, followed by sintering, a semiconductor layer and a conductor layer are sequentially formed on the dielectric layer; an etching process is conducted before forming the dielectric layer to remove a natural oxide film formed on the surface layer on the outer surface and on the surface inside the pores of the anode body so as to adjust the film thickness to a range of 0.5 to 5.0 nm; and the chemical conversion process is conducted at a temperature from -4 to 18°C for 7 to 110 minutes after reaching a predetermined voltage.
摘要:
An aqueous liquid composition contains a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.