WO2011070915A1 - Matériau d'électrode pour condensateur électronique en aluminium et son procédé de production - Google Patents

Matériau d'électrode pour condensateur électronique en aluminium et son procédé de production Download PDF

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WO2011070915A1
WO2011070915A1 PCT/JP2010/071048 JP2010071048W WO2011070915A1 WO 2011070915 A1 WO2011070915 A1 WO 2011070915A1 JP 2010071048 W JP2010071048 W JP 2010071048W WO 2011070915 A1 WO2011070915 A1 WO 2011070915A1
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Prior art keywords
aluminum
electrode material
powder
sintered
electrolytic capacitor
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PCT/JP2010/071048
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English (en)
Japanese (ja)
Inventor
慎也 曾根
敏文 平
将志 目秦
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東洋アルミニウム株式会社
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Priority to CN201080054864.1A priority Critical patent/CN102714098B/zh
Priority to KR1020127017675A priority patent/KR101731247B1/ko
Priority to US13/510,711 priority patent/US20120231262A1/en
Publication of WO2011070915A1 publication Critical patent/WO2011070915A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
    • H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052—Sintered electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052—Sintered electrodes
    • H01G9/0525—Powder therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof

Definitions

  • the present invention relates to an electrode material used for an aluminum electrolytic capacitor, in particular, an anode electrode material used for a medium-high voltage aluminum electrolytic capacitor and a method for producing the same.
  • Ceramic capacitors are manufactured by using barium titanate as a derivative and sandwiching it between noble metals. Ceramic capacitors are inferior in capacitance to aluminum electrolytic capacitors and tantalum electrolytic capacitors because of the thick dielectric, but they are small and difficult to generate heat.
  • a tantalum electrolytic capacitor has an oxide film formed on tantalum powder.
  • a tantalum electrolytic capacitor has characteristics that its electrostatic capacity is inferior to an aluminum electrolytic capacitor and higher than that of a ceramic capacitor, and its reliability is inferior to that of a ceramic capacitor and higher than that of an aluminum electrolytic capacitor.
  • ceramic capacitors are used for small electronic devices such as mobile phones
  • tantalum electrolytic capacitors are used for household appliances such as TVs
  • aluminum electrolytic capacitors are used for inverter power supplies for hybrid vehicles and for power storage for wind power generation. ing.
  • aluminum electrolytic capacitors are widely used in the energy field due to their characteristics.
  • an aluminum foil is used as an electrode material for an aluminum electrolytic capacitor.
  • an electrode material for an aluminum electrolytic capacitor can increase the surface area by performing an etching process to form etching pits. And the surface is anodized to form an oxide film, which functions as a dielectric.
  • various aluminum anode electrode materials (foil) for electrolytic capacitors suitable for applications are manufactured by etching an aluminum foil and forming an anodic oxide film on the surface at various voltages according to the operating voltage. can do.
  • etching pits are formed in the aluminum foil, but the etching pits are processed into various shapes corresponding to the anodic oxidation voltage.
  • the aluminum foil for medium- and high-pressure anodes is mainly subjected to direct current etching to make the etching pit shape a tunnel type and processed to a thickness corresponding to the voltage. Is done.
  • fine etching pits are required, and spongy etching pits are formed mainly by AC etching.
  • the surface area of the cathode foil is increased by etching.
  • hydrochloric acid has a large environmental load, and its treatment is a burden on the process and the economy. For this reason, development of the surface area increase method of the novel aluminum foil which does not depend on an etching process is desired.
  • Patent Document 1 an aluminum electrolytic capacitor characterized by using an aluminum foil having fine aluminum powder adhered to the surface has been proposed (for example, Patent Document 1). Further, it is made of aluminum which is self-similar in a length range of 2 ⁇ m to 0.01 ⁇ m and / or an aluminum oxide layer formed on the surface on one or both sides of a smooth aluminum foil having a foil thickness of 15 ⁇ m or more and less than 35 ⁇ m.
  • Patent Document 2 An electrolytic capacitor using an electrode foil to which fine particle aggregates are attached is also known (Patent Document 2).
  • the method of attaching aluminum powder to aluminum foil by plating and / or vapor deposition disclosed in these documents is at least sufficient to substitute for thick etching pits for use in medium- and high-pressure capacitors. I can not say.
  • an electrode material for an aluminum electrolytic capacitor that does not require an etching treatment
  • an electrode material for an aluminum electrolytic capacitor made of at least one sintered body of aluminum and an aluminum alloy is disclosed (for example, Patent Document 3).
  • This sintered body has a unique structure in which powder particles of aluminum or aluminum alloy are sintered while maintaining a gap between each other, so that a capacitance equal to or higher than that of a conventional etched foil can be obtained. It can be done (paragraph [0012] of cited document 3).
  • the electrode material of Patent Document 3 if the particle size of the powder of aluminum and aluminum alloy used is small (for example, an average particle diameter D 50 of 1 ⁇ 10 [mu] m), the control of the gap is difficult to be formed, various When the anodic oxide film is formed at a voltage of 5 mm, the gap may be narrowed or filled, making it difficult to obtain a desired capacitance. This problem is likely to occur when an anodized film is formed at a high voltage or when the thickness of the sintered body is set large.
  • the present invention relates to an electrode material for an aluminum electrolytic capacitor that is made of at least one sintered body of aluminum and an aluminum alloy and does not require an etching process, and a method for producing the same.
  • An object of the present invention is to provide an electrode material for an aluminum electrolytic capacitor in which a high capacitance is ensured even when the thickness of the bonded body is large, and a method for producing the same.
  • the present inventor has formed a sintered body of at least one kind of aluminum and aluminum alloy from two or more specific sintered layers. The inventors have found that the object can be achieved and have completed the present invention.
  • the present invention relates to the following electrode material for an aluminum electrolytic capacitor and a method for producing the same.
  • An electrode material for an aluminum electrolytic capacitor comprising a sintered body of at least one powder of aluminum and an aluminum alloy, (1) The powder has an average particle diameter D 50 of 1 to 10 ⁇ m, (2) The sintered body is composed of two or more sintered layers, and the powder contained in the adjacent sintered layers has an average particle size D 50 different by 0.5 ⁇ m or more.
  • the electrode material for aluminum electrolytic capacitors characterized by the above-mentioned. 2.
  • Item 2 The electrode material for an aluminum electrolytic capacitor according to Item 1, further comprising a base material that supports the electrode material. 3.
  • the sintered body is formed on both surfaces of the base material, (1) The thickness of the sintered body on each side is 35 to 500 ⁇ m, (2) Each sintered layer included in the sintered body on each surface has a thickness of 15 ⁇ m or more.
  • Item 4. The electrode material for an aluminum electrolytic capacitor as described in 2 or 3 above. 5.
  • a method for producing an electrode material for an aluminum electrolytic capacitor comprising: (1) A first step of laminating two or more layers of a film comprising a composition containing at least one powder of aluminum and an aluminum alloy on a substrate, (i) the powder contained in each film is an average The particle size D 50 is 1 to 10 ⁇ m, and (ii) the powder contained in the adjacent coating is different in average particle size D 50 by 0.5 ⁇ m or more, the first step, (2) a second step of sintering the two or more layers at a temperature of 560 ° C. or higher and 660 ° C. or lower; And a manufacturing method characterized by not including an etching step. 6).
  • Item 6 The manufacturing method according to Item 5, wherein the two or more layers are formed on both surfaces of the substrate. 7).
  • Item 7. The manufacturing method according to Item 5 or 6, further comprising a third step of anodizing the sintered two or more layers.
  • the electrode material for an aluminum electrolytic capacitor of the present invention comprises a sintered body of at least one kind of powder of aluminum and an aluminum alloy, and the sintered body is formed of two or more specific sintered layers, whereby aluminum and aluminum Even when the particle size of the alloy powder is small and the thickness of the sintered body is large, a high capacitance can be secured.
  • Electrode Material for Aluminum Electrolytic Capacitor comprises a sintered body of at least one powder of aluminum and aluminum alloy, (1) The powder has an average particle size D 50 (before sintering) of 1 to 10 ⁇ m, (2) The sintered body is composed of two or more sintered layers, and the powder contained in the adjacent sintered layers is different in average particle diameter D 50 (before sintering) by 0.5 ⁇ m or more.
  • the particle size of the aluminum and aluminum alloy powder is small and the thickness of the sintered body is large.
  • a high capacitance can be ensured.
  • the raw material aluminum powder for example, aluminum powder having an aluminum purity of 99.8% by weight or more is preferable.
  • the raw material aluminum alloy powder include silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), chromium (Cr), zinc (Zn), and titanium (Ti). ), Vanadium (V), gallium (Ga), nickel (Ni), boron (B), and an alloy containing one or more elements such as zirconium (Zr).
  • the content of these elements in the aluminum alloy is preferably 100 ppm by weight or less, particularly 50 ppm by weight or less.
  • the powder has an average particle diameter D 50 used as the 1 ⁇ 10 [mu] m. Among these, in particular having an average particle diameter D 50 of preferably from 3 ⁇ 6 [mu] m.
  • the average particle size D 50 in the present specification is the particle size distribution curve obtained by calculating the particle size and the number of particles corresponding to the particle size by laser diffraction method. The particle size.
  • the shape of the powder is not particularly limited, and any of a spherical shape, an indefinite shape, a scale shape, a fiber shape, and the like can be suitably used.
  • powder made of spherical particles is preferable.
  • the powder produced by a known method can be used.
  • an atomizing method, a melt spinning method, a rotating disk method, a rotating electrode method, a rapid solidification method, and the like can be mentioned.
  • the atomizing method, particularly the gas atomizing method is preferable. That is, it is desirable to use a powder obtained by atomizing a molten metal.
  • a sintered body of said powder consists of two or more layers of sintered layer, the powder contained in the adjacent sintered layer is more than 0.5 ⁇ m average particle diameter D 50 (preferably 1 ⁇ 6 [mu] m) Different.
  • Examples of the structure of the sintered body include a sintered layer of a powder having an average particle diameter D 50 of 3 ⁇ m and a sintered layer of a powder having an average particle diameter D 50 of 4 ⁇ m, as shown in Examples 1 and 2. The structure which consists of these two layers is mentioned.
  • Example 3 there is a configuration in which three layers of a powder sintered layer having an average particle diameter D 50 of 3 ⁇ m and a powder sintered layer having an average particle diameter D 50 of 4 ⁇ m are alternately stacked. .
  • Each sintered layer is preferably one in which the powders are sintered while maintaining gaps therebetween. Specifically, it is preferable that the powders are connected to each other while maintaining a gap, and have a three-dimensional network structure as shown in each image of FIG. By using such a porous sintered body, a desired electrostatic capacity can be obtained without performing an etching treatment.
  • the porosity of each sintered layer can be appropriately set according to the desired capacitance and the like, usually within a range of 30% or more.
  • the porosity can also be controlled by, for example, the particle diameter of the starting aluminum or aluminum alloy powder, the composition of the paste composition containing the powder (resin binder), and the like.
  • a base material that supports the electrode material may be further included.
  • the material of the base material is not particularly limited and may be any of metal, resin and the like.
  • a resin resin film
  • metal foil can be used suitably.
  • aluminum foil is particularly preferably used.
  • an aluminum foil having substantially the same composition as the sintered body may be used, or a foil having a different composition may be used.
  • the surface of the aluminum foil may be roughened in advance.
  • the surface roughening method is not particularly limited, and known techniques such as cleaning, etching, blasting and the like can be used.
  • the aluminum foil as the substrate is not particularly limited, and pure aluminum or aluminum alloy can be used.
  • the aluminum foil used in the present invention is composed of silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), chromium (Cr), zinc (Zn), titanium ( Limiting the content of aluminum alloy or the above unavoidable impurity elements to which at least one alloy element of Ti), vanadium (V), gallium (Ga), nickel (Ni) and boron (B) is added within the required range Also included aluminum.
  • the thickness of the aluminum foil is not particularly limited, but is preferably in the range of 5 ⁇ m to 100 ⁇ m, particularly 10 ⁇ m to 50 ⁇ m.
  • the above aluminum foil can be manufactured by a known method. For example, a molten aluminum or aluminum alloy having the above predetermined composition is prepared, and an ingot obtained by casting the molten metal is appropriately homogenized. Thereafter, an aluminum foil can be obtained by subjecting the ingot to hot rolling and cold rolling.
  • a soft foil may be obtained by performing an annealing treatment within a range of 150 ° C. to 650 ° C., particularly 350 ° C. to 550 ° C.
  • the sintered body When the base material is left, the sintered body can be formed on one side or both sides of the base material. In the case of forming on both sides, it is preferable to arrange the sintered bodies (and the sintered layers contained therein) symmetrically with the base material interposed therebetween as shown in No. 3 to No. 5 in FIG.
  • the average thickness of the sintered body is preferably 35 to 500 ⁇ m, and the average thickness of each sintered layer contained in the sintered body is preferably 15 ⁇ m or more. These values apply to both cases where the substrate is formed on one side or both sides of the substrate, but when formed on both sides, the thickness of the sintered body on one side is 1 of the total thickness (including the substrate thickness). / 3 or more is preferable.
  • the average thickness of the sintered body is an average of 5 points excluding the maximum value and the minimum value after measuring the thickness of any 7 points with a micrometer.
  • the average thickness of each sintered layer is visually observed at the interface of each sintered layer in a scanning electron microscope cross-sectional photograph (three images arbitrarily taken) of about 200 times that the entire cross section of the sintered body is within the photographing range.
  • a straight line is drawn by judgment to determine the ratio of the thickness of each sintered layer, the average thickness of the sintered body is multiplied by each ratio to calculate the thickness of each sintered layer, and the calculated values for three sheets are averaged It is.
  • the electrode material of the present invention can be used for any aluminum electrolytic capacitor for low pressure, medium pressure or high pressure. It is particularly suitable as an intermediate or high pressure (medium / high pressure) aluminum electrolytic capacitor.
  • the electrode material of the present invention can be used without etching the electrode material when used as an electrode for an aluminum electrolytic capacitor. That is, the electrode material of the present invention can be used as an electrode (electrode foil) as it is or without an etching treatment.
  • An anode foil using the electrode material of the present invention and a cathode foil are laminated with a separator interposed therebetween and wound to form a capacitor element.
  • the capacitor element is impregnated with an electrolyte solution, and the capacitor element containing the electrolyte solution Is stored in an exterior case, and the case is sealed with a sealing body to obtain an electrolytic capacitor.
  • the method for producing the electrode material for aluminum electrolytic capacitor of the present invention comprises: (1) A first step of laminating two or more layers of a film comprising a composition containing at least one powder of aluminum and an aluminum alloy on a substrate, (i) the powder contained in each film is an average The particle size D 50 is 1 to 10 ⁇ m, and (ii) the powder contained in the adjacent coating is different in average particle size D 50 by 0.5 ⁇ m or more, the first step, (2) a second step of sintering the two or more layers at a temperature of 560 ° C. or higher and 660 ° C. or lower; And an etching process is not included.
  • First step In the first step, two or more layers of a film comprising a composition containing at least one powder of aluminum and an aluminum alloy are formed on the substrate.
  • the powder contained in each film has an average particle diameter D 50 of 1 to 10 ⁇ m
  • the powder contained in the adjacent film has an average particle diameter D 50 of 0.5 ⁇ m or more. (Preferably 1 to 6 ⁇ m).
  • composition (component) of aluminum and aluminum alloy those listed above can be used.
  • powder for example, pure aluminum powder having an aluminum purity of 99.8% by weight or more is preferably used.
  • the composition may contain a resin binder, a solvent, a sintering aid, a surfactant and the like as necessary. Any of these may be known or commercially available.
  • the resin binder is not limited.
  • a synthetic resin such as epoxy resin, urea resin, phenol resin, acrylonitrile resin, cellulose resin, paraffin wax, polyethylene wax or the like, or natural resin such as wax, tar, glue, urushi, pine resin, beeswax or wax can be preferably used.
  • binders are classified into those that volatilize when heated depending on the molecular weight, the type of resin, etc., and those that remain together with the aluminum powder due to thermal decomposition, and can be properly used depending on the desired electrostatic properties and the like. .
  • solvents can be used.
  • organic solvents such as ethanol, toluene, ketones, and esters can be used.
  • the paste composition can be formed by using a coating method such as roller, brush, spray, dipping or the like, or can be formed by a known printing method such as silk screen printing.
  • two or more layers of the coating can be formed on one or both sides of the substrate.
  • the average thickness of the two or more layers is preferably 35 to 500 ⁇ m, and the average thickness of each layer included in the two or more layers is preferably 15 ⁇ m or more. These numerical values apply to both cases of forming on one side or both sides of the substrate, but when forming on both sides, the thickness of the coating of two or more layers on one side is the total thickness (including substrate thickness). It is preferable that it is 1/3 or more.
  • the film may be dried at a temperature in the range of 20 ° C. or more and 300 ° C. or less as necessary.
  • the two or more layers are sintered at a temperature of 560 ° C. or higher and 660 ° C. or lower.
  • the sintering temperature is 560 ° C. or higher and 660 ° C. or lower, preferably 560 ° C. or higher and lower than 660 ° C., more preferably 570 ° C. or higher and 659 ° C. or lower.
  • the sintering time varies depending on the sintering temperature and the like, but can usually be appropriately determined within a range of about 5 to 24 hours.
  • the sintering atmosphere is not particularly limited, and may be any one of a vacuum atmosphere, an inert gas atmosphere, an oxidizing gas atmosphere (air), a reducing atmosphere, etc., and particularly a vacuum atmosphere or a reducing atmosphere. Is preferred. Also, the pressure condition may be normal pressure, reduced pressure or increased pressure.
  • the heat treatment atmosphere is not particularly limited, and may be any of a vacuum atmosphere, an inert gas atmosphere, or an oxidizing gas atmosphere, for example.
  • the pressure condition may be normal pressure, reduced pressure, or increased pressure.
  • the electrode material of the present invention can be obtained. This can be used as it is as an electrode for an aluminum electrolytic capacitor (electrode foil) without etching. On the other hand, if necessary, the electrode material can be subjected to anodization treatment as a third step to form a dielectric, which is used as an electrode.
  • the anodizing conditions are not particularly limited. Usually, a current of about 10 mA / cm 2 to 400 mA / cm 2 is applied in a boric acid solution having a concentration of 0.01 mol to 5 mol and a temperature of 30 ° C. to 100 ° C. It may be applied for more than a minute.
  • the electrode material of a comparative example and an Example was produced.
  • the capacitances of the obtained electrode materials were measured.
  • the capacitance was measured with an ammonium borate aqueous solution (3 g / L) after performing a chemical conversion treatment of 410 V on the electrode material in an aqueous boric acid solution (50 g / L).
  • the measurement projected area was 10 cm 2 .
  • Comparative Example 1 60 parts by weight of an aluminum powder (JIS A1080, manufactured by Toyo Aluminum Co., Ltd., product number AHUZ58FN) having an average particle diameter D 50 of 3 ⁇ m is mixed with 40 parts by weight of an ethyl cellulose binder, and dispersed in a solvent (ethyl cellosolve) to give a solid content of 50 weights. % Coating liquid A was obtained.
  • the coating liquid A was coated on both sides of a 30 ⁇ m thick aluminum foil (JIS 1N30-H18, 500 mm ⁇ 500 mm) with a silk screen and dried.
  • a 30 ⁇ m thick aluminum foil JIS 1N30-H18, 500 mm ⁇ 500 mm
  • drying was performed for 30 minutes in a furnace at 150 ° C., and the same coating and drying were repeated three times on the opposite side.
  • This sample was sintered in an argon gas atmosphere at a temperature of 650 ° C. for 7 hours to produce an electrode material.
  • the thickness of the sintered electrode material was about 390 ⁇ m.
  • Table 1 shows the capacitance of the obtained electrode material.
  • Comparative Example 2 Coating solution in the same manner as in Comparative Example 1 except that the aluminum powder having an average particle diameter D 50 of 3 ⁇ m was changed to an aluminum powder having an average particle diameter D 50 of 4 ⁇ m (JIS A1080, manufactured by Toyo Aluminum Co., Ltd., product number AHUZ58CN) B was obtained.
  • An electrode material was produced in the same manner as in Comparative Example 1 except that the coating liquid B was used.
  • the thickness of the sintered electrode material was about 390 ⁇ m.
  • Table 1 shows the capacitance of the obtained electrode material.
  • Example 1 As shown in No. 3 in FIG. 1, 90 ⁇ m of coating liquid A is applied and dried on one side of an aluminum foil, and then 90 ⁇ m of coating liquid B is applied and dried. An electrode material was produced in the same manner as in Comparative Example 1 except that A was applied by 90 ⁇ m and dried, and further coating solution B was applied and dried by 90 ⁇ m.
  • the thickness of the sintered electrode material was about 390 ⁇ m.
  • Table 1 shows the capacitance of the obtained electrode material.
  • Example 2 As shown in No. 4 of FIG. 1, 90 ⁇ m of coating liquid B is applied and dried on one surface of an aluminum foil, and then 90 ⁇ m of coating liquid A is applied and dried.
  • An electrode material was prepared in the same manner as in Comparative Example 1 except that B was applied and dried by 90 ⁇ m, and coating solution A was applied and dried by 90 ⁇ m.
  • the thickness of the sintered electrode material was about 390 ⁇ m.
  • Table 1 shows the capacitance of the obtained electrode material.
  • Example 3 As shown in No. 5 of FIG. 1, coating liquid B is applied and dried on one side of an aluminum foil at 60 ⁇ m, coating liquid A is applied and dried at 60 ⁇ m, and coating liquid B is applied at 60 ⁇ m. Comparative Example 1 except that the coating liquid B was applied and dried on the opposite side in the same manner with 60 ⁇ m, the coating liquid A was further applied with 60 ⁇ m, and the coating liquid B was further applied with 60 ⁇ m and dried. In the same manner, an electrode material was produced.
  • the thickness of the sintered electrode material was about 390 ⁇ m.
  • Table 1 shows the capacitance of the obtained electrode material.

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  • Microelectronics & Electronic Packaging (AREA)
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Abstract

L'invention concerne un matériau d'électrode pour condensateur électrolytique en aluminium qui comprend au moins un corps fritté en aluminium et alliage d'aluminium et ne nécessite pas de gravure, dans lequel une forte capacité électrostatique est maintenue même en cas de faible taille de particule d'une poudre d'aluminium et d'alliage d'aluminium et lorsque le corps fritté est épais. De plus, l'invention concerne un procédé de production associé. Plus précisément, le matériau d'électrode pour condensateur électrolytique en aluminium, qui comprend le corps fritté constitué d'au moins une poudre d'aluminium et d'alliage d'aluminium, est caractérisé en ce que (1) la poudre mentionnée ci-dessus a une taille de particule moyenne (D50) de 1 à 10 μm, et (2) le corps fritté précité comprend au moins deux couches frittées, la poudre mentionnée ci-dessus étant incluse dans les couches frittées adjacentes ayant des tailles de particule moyennes (D50) qui diffèrent d'au moins 0,5 μm.
PCT/JP2010/071048 2009-12-08 2010-11-25 Matériau d'électrode pour condensateur électronique en aluminium et son procédé de production WO2011070915A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201080054864.1A CN102714098B (zh) 2009-12-08 2010-11-25 铝电解电容用电极材料及其制备方法
KR1020127017675A KR101731247B1 (ko) 2009-12-08 2010-11-25 알루미늄 전해 축전기용 전극재 및 이의 제조 방법
US13/510,711 US20120231262A1 (en) 2009-12-08 2010-11-25 Electrode material for aluminum electrolytic capacitor and production method therefor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2009-278415 2009-12-08
JP2009278415 2009-12-08
JP2010249502A JP5511630B2 (ja) 2009-12-08 2010-11-08 アルミニウム電解コンデンサ用電極材及びその製造方法
JP2010-249502 2010-11-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103688327A (zh) * 2011-07-15 2014-03-26 东洋铝株式会社 用于铝电解电容器的电极材料及其制备方法
US9202634B2 (en) 2012-02-10 2015-12-01 Toyo Aluminium Kabushiki Kaisha Method for manufacturing electrode material for aluminum electrolytic capacitor
US9378897B2 (en) 2011-05-26 2016-06-28 Toyo Aluminium Kabushiki Kaisha Electrode material for aluminum electrolytic capacitor, and process for producing same
CN115274304A (zh) * 2022-08-02 2022-11-01 新疆众和股份有限公司 烧结箔及其制备方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6043133B2 (ja) * 2012-09-13 2016-12-14 日本軽金属株式会社 アルミニウム電解コンデンサ用電極の製造方法
JP6346743B2 (ja) * 2012-12-11 2018-06-20 日本ケミコン株式会社 コンデンサ
KR101499721B1 (ko) * 2013-08-09 2015-03-06 삼성전기주식회사 기판 내장용 적층 세라믹 전자부품 및 적층 세라믹 전자부품 내장형 인쇄회로기판
JP6355920B2 (ja) * 2013-12-27 2018-07-11 東洋アルミニウム株式会社 アルミニウム電解コンデンサ用電極箔及びその製造方法
JP6546018B2 (ja) * 2015-06-29 2019-07-17 日本軽金属株式会社 アルミニウム電解コンデンサ用電極の製造方法
JP6759067B2 (ja) * 2016-11-18 2020-09-23 日本軽金属株式会社 アルミニウム電解コンデンサ用電極の製造方法
CN114555869B (zh) * 2019-10-21 2023-12-22 日本轻金属株式会社 铝构件、免疫层析用测试试条及铝构件的制造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003338433A (ja) * 2002-05-22 2003-11-28 Nec Tokin Corp 固体電解コンデンサ用の陽極体、その製造方法及び固体電解コンデンサ
JP2008098279A (ja) * 2006-10-10 2008-04-24 Toyo Aluminium Kk アルミニウム電解コンデンサ用電極材及びその製造方法
JP2008270754A (ja) * 2007-03-28 2008-11-06 Sanyo Electric Co Ltd 固体電解コンデンサおよびその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60033076T2 (de) * 1999-04-16 2007-08-30 Matsushita Electric Industrial Co., Ltd., Kadoma Anodische Elektrode für Elektrolytkondensator und Verfahren zu ihrer Herstellung
CN100593861C (zh) * 2007-08-22 2010-03-10 中国科学院化学研究所 染料敏化纳晶薄膜太阳能电池光电极及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003338433A (ja) * 2002-05-22 2003-11-28 Nec Tokin Corp 固体電解コンデンサ用の陽極体、その製造方法及び固体電解コンデンサ
JP2008098279A (ja) * 2006-10-10 2008-04-24 Toyo Aluminium Kk アルミニウム電解コンデンサ用電極材及びその製造方法
JP2008270754A (ja) * 2007-03-28 2008-11-06 Sanyo Electric Co Ltd 固体電解コンデンサおよびその製造方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9378897B2 (en) 2011-05-26 2016-06-28 Toyo Aluminium Kabushiki Kaisha Electrode material for aluminum electrolytic capacitor, and process for producing same
CN103688327A (zh) * 2011-07-15 2014-03-26 东洋铝株式会社 用于铝电解电容器的电极材料及其制备方法
EP2733712A4 (fr) * 2011-07-15 2015-08-12 Toyo Aluminium Kk Matière d'électrode destinée à un condensateur électrolytique d'aluminium et son procédé de production
US9330851B2 (en) 2011-07-15 2016-05-03 Toyo Aluminium Kabushiki Kaisha Electrode material for aluminum electrolytic capacitor, and method for producing same
US9202634B2 (en) 2012-02-10 2015-12-01 Toyo Aluminium Kabushiki Kaisha Method for manufacturing electrode material for aluminum electrolytic capacitor
CN115274304A (zh) * 2022-08-02 2022-11-01 新疆众和股份有限公司 烧结箔及其制备方法
CN115274304B (zh) * 2022-08-02 2024-06-07 新疆众和股份有限公司 烧结箔及其制备方法

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TW201135770A (en) 2011-10-16
JP2011142305A (ja) 2011-07-21
CN102714098B (zh) 2015-03-25
US20120231262A1 (en) 2012-09-13
TWI466154B (zh) 2014-12-21
KR101731247B1 (ko) 2017-04-28

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