The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2009
Filed:
Sep. 30, 2004
Steven Dietz, Denver, CO (US);
Dean Recla, Arvada, CO (US);
Steven Dietz, Denver, CO (US);
Dean Recla, Arvada, CO (US);
TDA Research, Inc., Wheat Ridge, CO (US);
Abstract
A porous carbon characterized by a volumetric pore size distribution having two peaks, a first of said peaks being between 0.5 and 1.0 nm and a second of said peaks being between 1.0 and 5.0 nm. The porous carbon may have a volumetric capacitance in an organic electrolyte of at least 40 F/cm, an average pore diameter between about 2 nm and about 30 nm, a surface area of at least 900 m/g, and/or a density of at least 0.4 g/cm. A method for making such a carbon includes a) curing a mixture comprising a carbohydrate, a dehydrating component, and a nonmetallic cationic pore-forming agent and b) carbonizing the cured carbon under conditions effective to provide a porous carbon having a surface area between about 100 m/g and about 3000 m/g. The the dehydrating component and nonmetallic cationic component may comprise two moieties of one compound.