Aluminum oxide layer on anode foil for aluminum electrolytic capacitor
US11972906B2 · kind B2 · utility
0Cited by
7References
19Claims
0Family size
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Key dates
| Filing date | Nov 16, 2020 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Jan 2, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of producing a capacitor electrode includes forming an oxide layer on a foil. The method also includes inducing defects in the oxide layer followed by reforming the oxide layer. The oxide layer is reformed so as to generate a reformed oxide layer that is an aluminum oxide with a boehmite phase and a pseudo-boehmite phase. The amount of the boehmite phase in the reformed oxide layer is greater than the amount of the pseudo-boehmite phase in the reformed oxide layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.