Metal collector foil for electric double layer capacitor, method of producing the metal collector foil, and electric double layer capacitor using the metal collector foil
US6845003B2 · kind B2 · utility
11Cited by
3References
16Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 1, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Dec 1, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal collector foil for an electric double layer capacitor is an etched metal collector foil having an oxide film in an amount of not greater than 300 mg/m2, and a capacitance per unit surface area of not less than 150 μF/cm2. The etched metal collector foil is free from a dielectric layer formed by an anodic formation process on a surface of the etched metal collector foil. A method of producing the metal collector foil and an electric double layer capacitor incorporating therein the metal collector foil are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.