High Surface Area Carbon Electrodes for Electrochemical Double Layer Capacitors

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: N/A
Agency Tracking Number: 31801
Amount: $98,400.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1996
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
33 Eastern Avenue, East Providence, RI, 02914
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Evans
 (401) 434-5600
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A novel method for preparing carbon electrode structures having applications in electrochemical double layer capacitors (EDLCs) is described. The method for preparing these structures employs carbon (graphite) nano fiber materials and results in an electrode having both high surface area and high electronic conductivity; two essential characteristics for EDLC electrodes. The fabrication process allows the electrochemically active surface area, as well as, the crystallographic orientation of graphite crystallites to be controlled. Additionally, the resulting structure may require no internal current collector, thus allowing DLC devices made from these materials to achieve high specific capacitance. The "binder" used to prepare the structures is compatible with the carbon fiber materials and also contributes to the capacitance. A novel activation process is also used to achieve high specific capacitance in the finished electrode structure. By controlling the various process variables, it may be possible to tailor electrodes and ultimately DLC devices to specific applications. Microstructural and physiochemical characterization of the electrode materials will be performed. The electrochemical characteristics of finished electrode materials will be evaluated in assembled DLC devices.

* Information listed above is at the time of submission. *

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