Method for manufacturing electrode for aluminum electrolytic capacitor
US9805876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jul 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/0525
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A porous aluminum electrode has a porous layer formed by sintering aluminum powder on the surface of an aluminum core. The porous aluminum electrode, when subjected to a formation to a voltage of 200V or more, is boiled and then subjected to a first forming process in which formation is performed in an aqueous solution of ammonium adipate at a temperature of 80° C. or below and a second forming process in which formation is performed in a boric acid aqueous solution. When heat depolarization is first carried out, washing with water is performed for five minutes or more before heat depolarization; therefore, the porous layer is not destroyed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.