Activated carbon for electric double layer capacitor electrode and method for producing the activated carbon
US8993478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2010 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Oct 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method for producing an activated carbon for an electric double layer capacitor, with which the wettability of a carbon material with an alkali activator is improved, thereby improving contact efficiency between the carbon material and the alkali activator and efficiently promoting reaction between the carbon material, which is a starting material and the activator. The method comprises adjusting a carbon material as it is or after having been calcined to produce a carbon powder having an average particle diameter of 0.5 to 15 μm, oxidizing the carbon powder to contain 3 percent by mass or more of oxygen, and activating the oxidized product with an alkali activator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.