Title:
CARBON-BASED ULTRACAPACITOR
Document Type and Number:
WIPO Patent Application WO/2010/088186
Kind Code:
A3
Abstract:
A method of manufacturing a high surface area per unit weight carbon electrode includes providing a substrate, depositing a carbon-rich material on the substrate to form a film, and after the depositing, activating the carbon-rich material to increase the surface area of the film of carbon-rich material. Due to the activation process being after deposition, this method enables use of low cost carbon-rich material to form a carbon electrode in the capacitor. The electrode may be used in capacitors, ultracapacitors and lithium ion batteries. The substrate may be part of the electrode, or it may be sacrificial - being consumed during the activation process. The carbon-rich material may include any of carbonized material, carbon aerogel and metal oxides, such as manganese and ruthenium oxide. The activation may include exposing the carbon-rich material to carbon dioxide at elevated temperature, in the range of 300 to 900 degrees centigrade. This method may be used to make both symmetric and asymmetric ultracapacitors.
Inventors:
PATIBANDLA NAG B (US)
Application Number:
PCT/US2010/021984
Publication Date:
November 04, 2010
Filing Date:
January 25, 2010
Export Citation:
Assignee:
APPLIED MATERIALS INC (US)
PATIBANDLA NAG B (US)
PATIBANDLA NAG B (US)
International Classes:
H01G9/042; H01G9/058
Foreign References:
| US5636437A | 1997-06-10 | |||
| US20030108785A1 | 2003-06-12 | |||
| US5290592A | 1994-03-01 | |||
| US4900588A | 1990-02-13 |
Attorney, Agent or Firm:
DANIELSON, Mark, J. et al. (P.O. Box 10500Mclean, VA, US)
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