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Three-dimensional carbon fibers and method and apparatus for their production

United States Patent

8,119,198
February 21, 2012
View the Complete Patent at the US Patent & Trademark Office
This invention relates to novel three-dimensional (3D) carbon fibers which are original (or primary) carbon fibers (OCF) with secondary carbon filaments (SCF) grown thereon, and, if desired, tertiary carbon filaments (TCF) are grown from the surface of SCF forming a filamentous carbon network with high surface area. The methods and apparatus are provided for growing SCF on the OCF by thermal decomposition of carbonaceous gases (CG) over the hot surface of the OCF without use of metal-based catalysts. The thickness and length of SCF can be controlled by varying operational conditions of the process, e.g., the nature of CG, temperature, residence time, etc. The optional activation step enables one to produce 3D activated carbon fibers with high surface area. The method and apparatus are provided for growing TCF on the SCF by thermal decomposition of carbonaceous gases over the hot surface of the SCF using metal catalyst particles.
Muradov; Nazim Z. (Melbourne, FL)
University of Central Florida Research Foundation, Inc. (Orlando, FL)
12/ 818,529
June 18, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The subject invention was made with government support under U.S. Department of Energy (DOE), Contract No. DEFC3699GO10456, Grant 10046. The government has certain rights in this invention.