Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Reexamination Certificate
2009-07-29
2011-12-27
McCracken, Daniel C. (Department: 1736)
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
C204S157430, C423S447100, C423S447300, C977S743000, C977S843000, C977S847000
Reexamination Certificate
active
08083905
ABSTRACT:
The internal and external walls of the carbon nanotubes are doped with nano-sized metallic catalyst particles uniformly to a degree of 0.3-5 mg /cm2. The carbon nanotubes are grown over a carbon substrate using chemical vapor deposition or plasma enhanced chemical vapor deposition. Since the carbon nanotubes have a large specific surface area, and metallic catalyst particles are uniformly distributed over the internal and external walls thereof, the reaction efficiency in an electrode becomes maximal when the carbon nanotubes are used for the electrode of a fuel cell. The carbon nanotubes fabricated using the method can be applied to form a large electrode. The carbon nanotubes grown over the carbon substrate can be readily applied to an electrode of a fuel cell, providing economical advantages and simplifying the overall electrode manufacturing process. A fuel cell using as the carbon nanotubes for its electrode provides improved performance.
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Chang Hyuk
Choi Won-bong
Chu Jae-uk
Pak Chan-ho
Buchanan & Ingersoll & Rooney PC
McCracken Daniel C.
Samsung SDI & Co., Ltd.
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