Capacitor and method for producing a capacitor

US6842328B2 · kind B2 · utility

Inventors

• Joachim Schott · Minneapolis, US
• Brian Melody · Greer, US
• John Tony Kinard · Greer, US
• John D. Norton · New Brighton, US
• Mark E. Viste · Brooklyn Center, US
• Anthony W. Rorvick · Brooklyn Park, US
• Christian S. Nielsen · River Falls, US

Key dates

• Filing date: May 30, 2003
• Grant date: Jan 11, 2005
• Expiry date: May 30, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/932
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electrode for a capacitor includes a substrate comprising at least one of glassy carbon and a metal. According to various embodiments, the substrate may be provided as glassy carbon or any of a variety of metals for use in capacitors. The capacitor also includes an activated carbon material adjacent the substrate. The activated carbon layer includes oxygen-containing functional groups. A material is provided in contact with the activated carbon layer for providing enhanced capacitance for the electrode. Various types of capacitance-enhancing materials may be utilized, including carbon nanotubes and conductive metal oxides.