Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor
US-2024347279-A1 · Oct 17, 2024 · US
Electrode material for aluminum electrolytic capacitor, and method for producing same
US9330851B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9330851-B2 |
| Application number | US-201214232770-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 11, 2012 |
| Priority date | Jul 15, 2011 |
| Publication date | May 3, 2016 |
| Grant date | May 3, 2016 |
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Abstract
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An electrode material for an aluminum electrolytic capacitor, comprising, as constituent elements, sintered body of a powder of at least one member selected from the group consisting of aluminum and aluminum alloys, and an aluminum foil substrate supporting the sintered body thereon, wherein (1) the powder has an average particle size D 50 of 0.5 to 100 μm, (2) the sintered body is formed on one surface or both surfaces of the aluminum foil substrate and has a total thickness of 10 to 1,000 μm, (3) the porosity of the sintered body is 35 to 49% by volume, and (4) the sintered body is obtained by applying a rolling process to a film made from a composition comprising a powder of at least one member selected from the group consisting of aluminum and aluminum alloys, and subsequently sintering the film.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrode material for an electrolytic capacitor, comprising, as constituent elements, a sintered body of a powder of at least one member selected from the group consisting of aluminum and aluminum alloys, and an aluminum foil substrate supporting the sintered body thereon, wherein (1) the powder has an average particle size D 50 of 0.5 to 100 μm, (2) the sintered body is formed on one surface or both surfaces of the aluminum foil substrate and has a total thickness of 10 to 1,000 μm, (3) the porosity of the sintered body is 35 to 49% by volume, and (4) the sintered body is obtained by applying a rolling process to a film made from a composition comprising a powder of at least one member selected from the group consisting of aluminum and aluminum alloys, and subsequently sintering the film. 2. A method for producing an electrode material for an aluminum electrolytic capacitor, comprising the steps of: Step 1: forming a film made from a composition comprising a powder of at least one member selected from the group consisting of aluminum and aluminum alloys on an aluminum foil substrate; wherein (1) the powder has an average particle size D 50 of 0.5 to 100 μm, (2) the film is formed on one surface or both surfaces of the aluminum foil substrate, and the total thickness of the film or films is more than 10 μm but not exceeding 1,150 μm, Step 2: rolling the film, after Step 1, in such a manner that the film has a reduction within a range that exceeds 0% but is 15% or less, and that when the rolled film is sintered, the sintered body has a porosity of 35 to 49% by volume, and Step 3: sintering the film, after Step 2, at a temperature in the range of 560 to 660° C., the method being free from an etching treatment. 3. The production method according to claim 2 , wherein the rolling in step 2 is performed in such a manner that the film has a reduction with a range of 4% to 15%.
Assignees
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Classifications
Sintered electrodes · CPC title
based on aluminium · CPC title
Powder therefor · CPC title
- H01G9/0029Primary
Processes of manufacture · CPC title
Etched foil electrodes · CPC title
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- What does patent US9330851B2 cover?
- An electrode material for an aluminum electrolytic capacitor, comprising, as constituent elements, sintered body of a powder of at least one member selected from the group consisting of aluminum and aluminum alloys, and an aluminum foil substrate supporting the sintered body thereon, wherein (1) the powder has an average particle size D 50 of 0.5 to 100 μm, (2) the sintered body is formed on o…
- Who is the assignee on this patent?
- Taira Toshifumi, Muramatsu Kenji, Mehata Masashi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01G9/0029. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 03 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).